How Do Bed Bug Multiply

The War on Bedbugs

defeating bedbugs through an integrated approach

Tuesday, January 02, 2007

How fast can bedbugs multiply? – Part 1

I started caulking my parent’s place in late September, and my new apartment in November, now the work is nearing the end. Looking back, I probably should have stayed in the old apartment, just to prove that I can defeat the bedbugs, and to make my strategy more convincing. But the place had cracks everywhere and would have taken too much effort to seal them all, and I had two infestations to take care of at the same time, a damaged ceiling to repair, a scratched car to fix (I was thinking about how to fight the bedbugs while I was driving). I was physically and mentally exhausted and just wanted to get out. However, my parents did stay and the battle there is still going on.

Back to the main topic.

Suppose you accidentally brought home two bedbugs, one male and one female, how fast can they multiply with unlimited blood meals? Without using complicated mathematics, the result can be obtained easily with spreadsheet.

There are different data on bedbug’s life cycle on the Internet. I tried to use the average and made the following assumptions:

click the image to enlarge

Based on these assumptions, the spreadsheet was then setup and a graph was plotted, which contained three periods:

Here’s how I set up the spreadsheet:

Formulas for each column:

After 10 months, another event will kick in, which is that the bedbugs will start to die. However, the number is negligible compared with the huge base, so this wasn’t taken into consideration.

Also, 100% survival rate was assumed for all stages of life cycle, hence the result might differ a little in reality.

(Revised on Feb 25, 2007) From what I have researched so far, female adults lay 200 to 500 eggs over a period of two months. Therefore, in my calculations, the number of eggs laid should be reduced accordingly after day 130. But this will not affect the results that we have obtained above, because we were only looking at a period of about three months.

The conclusion is that it only takes a few months to have a heavy infestation, you need to catch it early and take care of it as soon as possible, once the number increases exponentially, it will be out of control. Next time we’ll examine how the numbers change if the food supply is limited.

posted by Frank at 9:49 AM


Great calculation Frank, with permission I would like to post the information on our website. Even if you cut all numbers by 75% the message is clear: find and treat your bed bug problem as soon as possible. The faster you detect a problem, the quicker you stop the growth.

Certified K9 Handler

1:14 PMFrank said.

John, thanks for reading my Blog. You may use the information, I would be grateful if it can be helpful to anyone.

7:04 AMAnonymous said.

This is great info to know.

4:17 AMN E Biddle, aka The Roach Lady said.

I have written a similar article from the perspective of what it would appear like for the "Blood Buffet" (you) from the first to the 30th day of infestation from one bedbug couple. It starts with one or two bites (the adult needs only 1 meal every ten days) that come, irritate and go away over the course of one week, and you may even have already disregarded it as an allergy to something. By the eleventh day the four eggs the mom laid on day one hatch and the nymphs and the mom herself partake of the blood buffet. And the Next day the next 4 nymphs and so on for the next ten days so that by day twenty you have about (considering 3 bites each) 60 or more itchy spots in various stages of healing. I will be publishing the article shortly. I needed an interval stat for how often nymphs need a blood meal which is how I found your blog. Nice work, great articles Frank!

6:57 PMAnonymous said.

I found one green solution for killing these suckers.

0.)reduce all the clutter in home

1.) use tape to catch and seal all the visible beadbugs and their eggs / littleones. from matress and box spring and where ever they are found. ensure that you kill them all physically.

2.) I have also tried to sanitise the entire matress & springbox by gently waxing all the spring box so that any invisible eggs or little ones are plucked out from your matress and box spring on the surface.

Use steam Iron to iron your matress and box spring (after you have waxed the matress and box spring with tape. excercise caution when you do this. Then put both items in encasements.

4.) use pillow encacements.

5.)Vaccum your entire home carpet and corners with the vaccume attachments given.

6.) if you have super steamer vaccum use it to sanitise your carpet (I am yet to find this)

7.) clean all shelfs.

8.) Use dryer in FULL HOT setting to clean your clothes just to kill the bugs in case they exist there

9) Spot heating of 120F also helps in sanitising your small wooden furniture. Ensure care when you do this. Probably some where outside.

10) properly bin your infected stuff if you cant sanitise it. One needs to be unattached to the materialistic things in this world once these aliens attack

11.) thoroughly vaccume your entire home every 2 days entire surface and corners need to be covered. do this religiously

12.) Persistance pays off. This is a long drawn battle and we must win.

14) I have also tried to use the summer heat to my advantage by storing all the sealed sanitised stuff in my car cabin and boot where the summer heat of 80F makes the internal temperature of closed car to 120F plus

I did all this and found that I have to some extent contained the blowout of infestation but i think I did it just in time or else i would have ended up with thousands of these in my home.

I will keep you posted on my progress and i make.

Monitor the health of your community here

More Articles

How Fast Can Bed Bugs Spread?

Silent Pests

Bed bugs have been in the news in recent years.After decades in which they seemed to have been almost eradicated, these pests are making a comeback. This is bad news for humans. According to the College of Agriculture at the University of Kentucky, bed bugs require a “blood meal” to survive, and they prefer the taste of human blood to that of other warm-blooded animals. These miniature vampires typically strike at night while people are sleeping, making a painless bite and sucking several drops of blood. Not known to carry infectious diseases, bed bugs nonetheless can cause allergic reactions to their saliva, and their bites leave itchy blotches similar to mosquito or flea bites. Hiding in inaccessible places, spreading out to all areas of a building and able to go months without feeding if necessary, they are difficult to find and control.

Once an infestation is underway, the property owner faces a tough eradication process that will require the services of a professional exterminator.This must be done sooner rather than later because they are hardy and they spread very quickly.


In the outdoors, bed bugs infest nests of birds, bats and other animals.These flightless insects, which measure 1/4 inch at maturity, enter a house, motel or apartment building by hiding in luggage, clothing or fabric. Once in place, the bugs set about reproducing, which they can do with impressive speed. Female bed bugs lay between one and five tiny eggs per day. Hatchlings are no bigger than a poppy seed.Once hatched, according to the School of Public Health at Harvard University, a baby bed bug or “nymph” requires only a single blood feast to molt and move into its next stage of development, which occurs five times before adulthood.

The nymphs reach maturity in a month or more, depending on conditions such as temperature (bed bugs like it warm) and the availability of blood. Assuming an average daily production of three viable eggs, simple math would indicate that at the end of one week, a single female would lay more than twenty eggs. Some weeks later, given a steady blood supply, these 20 bedbugs are adults. If half of them are females and each one lays twenty eggs in a week, this means a second generation of nymphs numbering approximately 200, all of which come from just one female bed bug. The production of three generations of bed bugs in a year is not uncommon.

Locational Spread

Bed bugs can spread from one room or apartment to another through door frames, windows, or holes or cracks in the walls, ceilings and floors. They can contaminate wood furniture by laying eggs in cracks and recesses, and when that furniture is moved, these eggs (which can stay viable for years) may hatch in a new location. Weeks or months without blood do not harm these tough insects.As a result, if bed bugs are found, one should consult an exterminator immediately.

Bed bugs have been in the news in recent years. After decades in which they seemed to have been almost eradicated, these pests are making a comeback. Not known to carry infectious diseases, bed bugs nonetheless can cause allergic reactions to their saliva, and their bites leave itchy blotches similar to mosquito or flea bites. These flightless insects, which measure 1/4 inch at maturity, enter a house, motel or apartment building by hiding in luggage, clothing or fabric. Some weeks later, given a steady blood supply, these 20 bedbugs are adults.

How do the bugs in the apartment multiply and can one bug grow? – Bedbugs – 2020

Video: Reasons Why Bed Bugs Spread (April 2020).

Bed bugs are a problem that every person encounters at least once in a lifetime. In order to understand how to deal with them it is necessary to find out how they multiply. For example, many are interested in the hermaphrodite bugs or not? This is what we will try to figure out the article.

Stages of bug development, life cycle

In life, any bug passes through several stages of development. At the same time, the individual can die at any stage. To further develop bugs, blood is needed, without which they can not cross to another stage. The entire period of development lasts about 1 month, but the duration may also depend on various factors:

  1. Temperature conditions.For a better life, the temperature is about 20-25 degrees.
  2. Humidity.Everyone knows that insects love moisture, and bedbugs are no exception.
  3. The darkness.Bugs live only in dark places, that is, if there is not a single dark corner in the house, the bugs can not reproduce there and exist.
  4. Power.To grow and grow bugs, human blood is needed. Without it, the population is likely to cease to exist.

In total, in the development of the bug, seven stages can be counted, which go successively one after the other.
Egg. It has just been delayed by the female. Eggs reach 1mm, they are translucent and oval.

  1. Stage 1 of thelarva. The larva has just hatched from the egg and has begun to live. It reaches 1.5mm in length. Body white, almost transparent.
  2. 2 stage of thelarva. The bug is already growing – 2mm in length, gradually the body becomes darker. Such larvae are sometimes called nymphs. They are not yet capable of reproduction.
  3. The third stage of thelarva is 2.5 mm. At this stage, the larva begins to actively discard the hair, due to the lack of a chitinous skin on the skin. The individual is still incapable of reproduction
  4. The fourth stage of thelarva is 3 mm. At this stage, the larva has its first feeding, as it is necessary for the body to fully moult. Nymphs consume too much blood and bring a person inconvenience, as one adult has 20 times more larvae. Small bugs do not inject anesthetic into the blood, so their bites are especially painful.
  5. Stage 5 of thelarva is 4, 5 mm. There is evidence that at this stage the individuals can reproduce, but not all attempts to lay eggs are successful.

The adult insect is 5 – 5.5 mm in length, this individual is ready for reproduction.

How does the reproduction of bedbugs occur?

Bedbugs reproduce, like most insects – by mating. In this case, unlike other insects, sexual contact does not occur by mutual desire. The male forcibly enters his sexual organ into the cavity of the female, piercing it and injecting the seminal fluid. Reproduction of bedbugs is traumatic. The seed enters the abdominal cavity of the female and is stored there for a lifetime, so that the female can independently fertilize and excrete new offspring without the help of a male.

At the same time from one such sexual intercourse a whole family of bedbugs can arise in one apartment.
After some time after fertilization, the female begins to lay 5-15 eggs a day.
It is important to note that males are not very choosy in choosing a sexual partner, and often attack individuals of the same sex, or small females. It should be noted that the results of studies in the population very often come across males with a pierced belly.

Where in the apartment do bedbugs build a nest?

Most often, bedbugs tend to ensure that people do not find them, so they hide in all dark crevices, where it can be convenient. They are called bed-type because they mostly live in mattresses, beds and under them, as well as in bed linens.

This insect is not fundamentally a habitat, the main thing is to have a comfortable temperature, sufficient humidity, closeness of food and darkness.

Bugs in the daytime are difficult to detect, because they are carefully hidden. The period of activity of the bedbug, when it can be detected, is a person’s strong sleep, which occurs early in the morning. Usually at this time people wake up from the bites of the larvae, which are felt quite painfully. At the same time, they live in nests, and can also breed in clothing.

The nest is in chaos, it completely lacks any hierarchy. In the "house" of bugs can be mixed larvae with adults and waste of life. At the same time in the apartment there may be even one, but several nests of bedbugs. In this case, individual larvae separate from the population and form their own families.

When do larvae hatch?

After the female lays eggs, they mature within 3-25 days, and then hatch. At the same time, the egg ripening time depends entirely on the temperature, the colder the longer the individual will be in the shell. A deferred egg can die if conditions for existence and development are unfavorable, for example it will be too cold.

How quickly do bugs multiply?

In order to understand how quickly bugs multiply, it is necessary to calculate how many eggs the females deposit. Usually it is from 30 to 60 individuals per month. But we need to take into account that during this time the female will bring out new females, that is, the process of reproduction will occur in a geometric progression. In this case, the bugs are multiplying by traumatic insemination, the mechanism of which is prescribed above. At the same time, the female can lay no more than700 eggsin her life, and she lives forabout a year.During this time, the apartment can turn into hell, especially if there are a lot of people living in the apartment, as the food for parasites is human blood.

Can one bug grow?

On this question for a long time could not find an unambiguous answer, as earlier conducted experiments, placing one female in a box and she began to lay eggs, after a while. Now the time has passed and the mechanism of reproduction of these insects has been fully studied. One bug can multiply only if it’s a female, and it has already been fertilized.

Males can not reproduce themselves, it was revealed scientifically, by conducting series of experiments. Moreover, the populations in which there were some males, although they made attempts to reproduce, it was not possible. In connection with this, bugs are not able to reproduce alone.

Can bugs reproduce without food?

In order for fertilization in bedbugs to occur, both males and females need blood, otherwise their body will simply not have enough reserve. Thus for this process there should be about 3-7 high-grade receptions of food (blood). Only individuals feed at night, because of fear of being discovered. Without blood, there can not be bedbugs.

Moreover, blood is necessary for bedbugs not only for reproduction, but for growth. At different stages of the life cycle, the amount of blood consumed is different for individuals. For example, larvae of bedbugs consume less food, but more often, and adults at a time drink more blood, but they do it much less often.

When bedbugs are starving, their body begins to dry out, all life processes slow down. They become passive, practically do not move and spend all their time in the nest.

In the house there were bugs – they immediately begin to multiply?

When bed bugs appear in the room, their very first task is to find a place for reproduction and nutrition. Bedbugs begin to multiply immediately after they find a nest, regardless of the cause of their appearance. Usually they can be found at 5-6 in the morning, as this is the peak of their activity. In addition, around the house you will find a strange husk, this is the skin that larvae discard during moulting.

If the temperature in the house is less than 13-14 degrees, bed bugs fall into a hibernation, but if they are brought into a warm room, they immediately start to multiply.

How Fast Do Bed Bugs Multiply?

Okay, prepare yourself because this subject is not for people who have bad creepy crawly dreams. If you read all of this you will have the knowledge on how quickly you will need to take action on these critters.

So how fast do bed bugs multiply?The answer is… In normal conditions and with regular feeding intervals and a male to mate with, the female bed bug lays 4-7 eggs a day. Bed Bug eggs hatch once every 10-12 days. After 20-60 days depending on the weather, bed bugs (nymphs) become an adult and the females start laying eggs for themselves. So as you can imagine, at 90 days and the rate of hatching you will be more than 1,200 – 1,600 bed bugs strong. Each female bed bug under normal conditions will lay between 200 – 500 eggs in her lifetime. Disgusting right? Keep reading.

A lot of people believe that bed bugs only come out at night. Bed Bugs come out when the host (you) are sleeping, or sitting on the couch, or a chair. Depending on the infestation you could see them out in plain sight.

How Easy is it For Bed Bugs to Spread?

Despite the belief that bed bugs can ONLY spread from person-to-person, this is simply not the only bed bug practice.

Bed Bugs are atraveling bugand prefer to get around by:

  • Luggage
  • Older Furniture
  • Clothes
  • Backpacks
  • Used Mattresses
  • Purses

When I visit a home that has an infestation, the first place I check is the beds and bed frames in the home. From there I move to the furniture. I check couches, nightstands, dressers, and along the wall where the headboard sits. Bed Bugs can get into wall voids and electric outlets around the home as well. This will all depend on how big the infestation is. A larger infestation you can see the floor move literally I’ve seen it.

Bed bugs willtravel aroundthe homefreely, they can travel on you as well if you sit in a spot that is infested. They can be spread to other homes when you visit a place that has bed bugs or someone who has them visits yours. You will likely take these critters with you if you decide to sit down anywhere or set your purse down in an infested home.

How Much do Exterminators Charge For Bed Bugs?

You can expect that when you have bed bugs it is taken seriously by exterminators. You will pay for the initial inspection, generally $85-$150 for that. When all is said and done you can expect to pay anywhere from $500-$2,500 for the services rendered. There are multiple types of treatment, here are the most common.

Top 3 Treatments:

  1. Chemical
  2. Dust
  3. Heat

Chemical Treatmentrequires 3-5 visits from the exterminator to treat your home they visit every 2 weeks for these visits. That can take 6-10 weeks to get rid of the problem. The cost for this treatment is anywhere from$90-$150per visit.

Dust treatmentis a one-shot deal. The pest technician will dust all the infected areas it does make a big mess and treatment drys out the oils on the bed bug’s back and suffocates them. After the dust is put down it can still take up to 45 days before they are all dead. The cost of this treatment isroughly $500.

Heat treatmentis the fastest treatment. In 8-12 hours you can kill the bugs. It is the most expensive of all the treatments because the technician has to get your home up above 120% Fahrenheit. This will make your power bill a little high. It does kill all the bed bugs in the room and is very effective if done along with the other 2 treatments listed above. This service will cost anywhere between$1,500-$2,500.

I have my own thoughts on heat treatments that I would like to share. Like I stated above heat treatments are very effective within the rooms being treated, but the bed bugs that have made their way to the outer walls between the insulation may not be killed. If this happens and the homeowner/renter goes to bed that night can likely bite again.

Pest Insider Secret:You can treat bed bugs yourself with the pro chemicals!

What Should I Do To Prepare For A Bed Bug Treatment?

As a pest industry professional, I have found that chemical treatment is half the battle

Let’s get organized for this:

  1. Stand mattresses and box springs up against the wall.
  2. Machine dry all clothing items, linens, and bedding.Place them into clean trash bags, then place the bags in the center of the room. Laundering tips: change the lint trap between loads, throw away (outside of your house) any laundry bags used to transport items to the laundry room.
  3. Remove books and knick-knacks from shelving units and put them into plastic trash bags and seal the bags Place bags in the center of the room.
  4. Vacuum your home thoroughly.

Be sure to evaluate your belongings, If your mattress looks bad throw it away and get a new one. Carpet may need to be replaced in severe cases of infestation. You must be vigilant when your up against bed bugs. Keep everything vacuumed and empty it outside of your home.

What Pesticides Get Rid of Bed Bugs?

The best pesticides for bed bugs are:

Temprid SC –This chemical is, in my opinion, the industry leader to get rid ofbed bugsandroaches. Temprid has a good residual and an amazing knockdown. The 2 chemicals in Temprid areimidaclopridandcyfluthrin.These 2 chemicals together give bed bugs a great 1,2, punch.

NyGard IGR– Nygard is a growth regulator, it’s purpose is to cause reproductive problems for the next generation of bugs. Nygard is never used alone, it is always used with another chemical to enhance the overall result.

Here’s The Equation:

Temprid + Nygard = DEAD BUGS!

CimeXa –This is precipitatedsilica dust. CimeXa is used in a bellow duster.

The use of these 3 chemicals properly will get rid of any size bed bug infestation in 6-8 weeks. Be sure to apply every 2 weeks. You can just do the spray or just do the dust.

Safety equipment for these treatments:

  • Valved Respirator Mask
  • Nitrile Gloves
  • Safety Glasses
  • Long Sleeve Shirt and Pants

How Can I Get Rid of Bed Bugs Myself?

Chemical Treatment:In a gallon spray can you will mix the Temprid and NyGard and Water. Be sure to follow the label when mixing these chemicals together. I believe it is 16 mil. of Temprid and 4 mils. of NyGard.

Okay Here are the Items you will treat.

First treat all the beds, the mattress, box spring, and bed frames. Treat behind the frame of the headboard as well Anything you sit on that has a cushion love seat, sofas, and chairs. Treat around the perimeter of all baseboards.

Dust Treatment:Take CimeXa and put it in a bellow duster. Now you willtreatall theareasstatedintheabove paragraph.

Disclaimer:Dusting your home you will need to wear a paper mask or respirator to treat. CimeXa makes a big mess and there will be dust all around your house. Make sure to turn the HVAC off when applying it.


When bed bugs enter your home your response time is very important, it could mean the difference of how hard you will have to work to eradicate them. Remember the female lays 4-7 eggs daily. You will spend between $500 and $2,500 dollars for the pros to treat it. Temprid SC, NyGard IGR, and CimeXa are the some of the very best chemicals to treat bed bugs. So yes, you can do this yourself it will cost you around $200. Decide which way to treat that will be right for you. Bed bugs are a serious thing, I have seen lives turned upside down over the effects of it. To bed bugs, you are the food.

Related Questions

What Is The Best Indoor Chemical To Get Rid Of Ants?

There are 2 chemicals you can use inside for optimal ant treatment

  1. Optiguard –This is a gel bait you will put in the areas the ants are getting in from. You will likely find them getting in around sink areas in the kitchen, bathrooms, electrical sockets and unsealed floor HVAC vents.
  2. Alpine WSG –This chemical has one of the most liberal labels. Spray it around all the baseboards.

Where do Yellow Jackets Make Their Nest?

Yellow Jackets are among the most vicious species of bee they are fast and give almost no warning before they strike.They nest in the ground, in wall voids, and under the siding.

How do bed bugs multiply?

You should hate bed bugs because of two reasons: They disturb you and reproduce rapidly. So, how bed bugs reproduce and what can stop them multiplying?

What are bed bugs?

Bed bugs are parasites that feed on blood. They feed only on blood and unfortunately, their main food source is human.

A bed bug has 3 life stages and its size varies from 1 to 6 mm depending on its stage. You can find more information about bed bugs stages in this post:

Physical features of bed bugs are below:

  • They are flat and oval-shaped
  • Half-winged (so little useless wings so, no wings at all)
  • Reddish brown colored (More reddish after recently fed)

What do bed bugs look like?

They are not microscopic creatures so, you can see them with naked eye. What you have to know about bed bugs firstly is they can’t fly or jump which means that if you see an insect flying or jumping, you can eliminate bed bug option easily.

Bed bug eggs

Here is a video showing bed bug eggs:

Bed bugs aren’t mammalians which means they multiply by laying. Bed bug eggs can be differentiated from other bug eggs with their shapes and appearances on the floor.

Bed bug eggs are yellow white, they stand together and glued to the surface, mostly in cracks. The most distinguishing feature of those eggs from the other bug eggs is “glue”.

Other places where bed bugs lay their eggs are:

  • Behind walls
  • Inside clothes
  • Mattress
  • Behind wall papers
  • Other places near to their food source

Beg bugs male/female ratio

This is important because reproducing activity of beg bugs depend on the number of females. After laying their eggs, the number of female and male eggs hatching is almost the same: 1:1 ratio.

Success hatching ratio of a female is usually more than 95 percent.

How fast bed bugs spread?

Laying ability of a female adult bed bug depends on how much it feeds. So, more blood they can have, more eggs they will produce.

After a female bed bugs feeds enough once, she will produce 1 to 7 eggs per a day for next 10 days.

Eggs will hatch in 7 to 10 days if the air condition is suitable for them, otherwise hatching time can take up to 30 days.

So, a female bed bug can hatch 100 to 500 eggs in her lifetime which means they will reproduce rapidly and if no action is taken, the invasion will be inevitable.

How fast bed bugs grow?

After hatching, new born bed bug will have 2 more life stages. First will be nymph and this stage has 5 instars in it.

They will need a month in average to become an adult which has a body size more than 5 mm.

How long bed bugs survive without feeding

The main reason what makes bag bugs invasive is their resistance to hunger. They can survive without feeding at least for months, nevertheless it was observed that they can live without feeding for more than a year in some cases.

Ideal temperature for bed bugs

Ideal environment for bed bugs is where the temperature is between 65° and 85°. So, their activity will reduce below 65° and above 85°.

What prevents bed bugs from reproducing?

Under these conditions, their reproducing speed gets slower or ends:

  • If they can’t feed enough
  • If they are not close to their food sources
  • If the environment temperature is not between 65° and 85°.


What you must know about bed bugs reproduce are:

  • They usually start mating after 1 month they hatched.
  • They multiply by laying.
  • Their eggs are glued and in group.
  • Hatching success for the eggs is more than 95 percent.
  • An adult female can lay 100 to 500 eggs during her lifetime.
  • They are more reproductive during ideal condition: When the feed enough and it’s 65° and 85° around.
  • If no action is taken on time, you must face a bed bug invasion.

For more information about bed bugs, you can check these posts:

Add Comments: