How long do Bed Bugs live?

First, we should begin by saying that it’s unlikely that you’ll be able to get rid of bed bugs by waiting for them to die off.

Females lay anywhere from 1-7 eggs per day — and most of them are going to hatch (97+% in most home environments).

However, it is certainly possible, given enough time, and a complete lack of food, that an infestation can die off. You’ll need to vacate for at least a year, probably 18 months, to be safe. Cold temperatures will stretch this timeframe out, and warm temperatures will shorten it. That said, there are far more effective and fast ways to get rid of bed bugs.

In general, many variables can have an impact on the lifespan of a bed bug. The first clue depends on their life stage.

Life and growth stages

Bed bugs have five distinct live stages, beginning as a nymph, and ending as a fully developed adult. Molting requires a lot of energy, so each stage transition requires a full blood meal to complete.

  • Eggs (1mm in length). Eggs take about 10-15 days to hatch in most home environments.
  • 1st stage nymph (1.5 mm in length).
  • 2nd stage nymph (2 mm in length).
  • 3rd stage nymph (2.5 mm in length).
  • 4th stage nymph (3 mm in length).
  • 5th stage nymph (4.5 mm in length).
  • Adult

Progression from 1st stage nymph to adult takes approximately five weeks with regular meals and a good environment — but can take longer if feeding is infrequent or intermittent.

Depending on the stage (and therefore maturity), the bugs can go longer without food. Nymphs can last about two weeks without a meal, while adults can go as long as a year under the right conditions.

How long do bed bugs live without blood?

It might seem counterintuitive, but bed bugs can live longer without a meal than they can if they are regularly feeding.

There’s a biological process by which they slow their metabolism down in the absence of food. Temperature also plays a part, with lower temperatures sustaining the bugs longer.

The single most significant threat to bed bugs is dehydration. They rely solely on a blood meal for hydration, and in a warm environment without people to feed on, they dry up pretty quickly (about 70 days in controlled laboratory observation). This is also why they try to find tight crevices to hide in — to create a tiny little habitat with a favorable temperature and humidity.

How do you get Bed Bugs?

Nearly everyone who discovers they have bed bugs has the same first question:

“How did I get bed bugs?”

The short answer is that you probably brought them home.

Do you have any new furniture or clothing that you purchased secondhand at a resale shop? Have you just returned from a long summer abroad?

As they say, “An ounce of prevention is worth a pound of cure.” Understanding how these little critters get into your bed can go a long way towards making sure that you stay bed-bug free in the future.

First, let’s address the elephant in the room: you don’t get bed bugs because you’re dirty. There’s a stigma attached to having bed bugs, but the fact is that it’s probably not your fault.

Bed bugs don’t migrate indoors from the outside. You can’t attract them by being unclean, or by having a dirty home.

How do bed bugs spread?

For the most part, you have to have brought them with you. Yes, it’s gross, but it’s probably true.

Bed bugs are crawlers; they don’t fly or jump.

Bed bugs are also very good clingers — they’ll cling on to clothing, furniture, and all kinds of soft textiles. Many vintage clothing and antique (mid-century modern, anyone?) collectors have ended up unknowingly introducing bed bugs into their homes with their latest acquisitions.

Common culprits:

  • purses
  • clothing and laundry
  • travel bags
  • secondhand upholstered furniture

It’s not just the item; it’s where you put it, too. A purse, for example, is a target because it’s often laid on the floor, left on a couch, or set on the bed (all very good spots to find bugs).

If you haven’t brought anything new into the home, you likely brought them in from another location that you visited recently. Travel is one of the most common ways to pick up bed bugs, but it doesn’t have to be a big trip: even the subway can be infested with bugs.

New York City subways have had to be fumigated for bed bugs multiple times over the years. Any number of riders could have picked them up and brought them home on their clothing or bags.

Even though they can’t jump or fly, bed bugs can migrate easily from apartment to apartment or dorm to dorm. Multi-tenant buildings are common locations for infestations.

How to avoid bringing bed bugs home

Once they’re in your things, bed bugs can live for a tremendous amount of time. The good news is that there are a few steps you can take to help mitigate your chances of taking home an unwanted hitchhiker.

Know the risk areas

Bed bugs are attracted to warm-blooded animals. Anywhere that you’ll sit, sleep, or lean on could facilitate a transmission.

Due to significantly higher amounts of nightly turnover, hotels, hostels, and homeless shelters can be high-risk locations. Again, it has very little to do with how clean these places are; it’s just a function of how many people they serve. More people means a higher likelihood that one of them brought bed bugs in with them.

Know where to keep your things

When traveling, you should avoid placing your luggage (and clothes) anywhere that bed bugs might be tempted to crawl. Experts suggest that you should stick to using luggage racks, found in most rooms.

  • Don’t lay your clothes out on the bed before a shower, no matter how briefly.
  • Consider keeping your worn clothes in a sealed plastic bag until you get home.

Know how to perform a quick inspection

The tell-tale signs of a bed bug infestation are:

  • Black or rust-colored spots (fecal deposits)
  • Shed/molted skin shells
  • Hatched eggshells
  • Bloodstains (around pressure points in mattresses or under sheets)

Furniture and other items should be thoroughly inspected. Pay close attention to fabric seams, flaps, buttons, and any other indentations that might provide some shelter or darkness for hiding bugs. Carefully check all joints and places where wood or structural components meet and come together.

The most common place to find bed bugs in a hotel or hostel is around the headboard, especially if it’s wall-mounted.

Keep an eye out for any peeling paint or wallpaper that the bugs can tuck under. Also, look for signs around light switch plates or power outlets.

Know what to do after you get home

Heat is very effective at killing bed bugs. Once you arrive home from a hotel or somewhere that you suspect may have had bed bug potential, you should run your clothes through a hot wash, ending with a hot dryer cycle.

If the item isn’t machine washable, you should consider placing it into a vacuum-sealed bag. Be warned: it might be in there a while, as bed bugs can survive up to a year without a meal.

How to check for Bed Bugs

In just a couple of minutes, you can sleep soundly, knowing that the bed bugs won’t bite.

To spot bed bugs, it helps to learn a little about their behavior.

Bed bugs hide during the day

Unless an infestation is particularly bad, you probably won’t walk into a hotel room and see them crawling on the mattress. They’re much shyer than that. There are literally unlimited ways you can get bed bugs — so the trick is in learning how to deal with them.

Bed bugs like to be close to their prey

They feed on animal blood (yours), and they don’t like to be far from a potential meal. They typically congregate around areas that humans are likely to be:

  • beds
  • chairs
  • couches
  • blankets

Exterminators are also trained to look at the surrounding room. Often you’ll find signs of an infestation in the corners, under peeling paint or wallpaper, behind light switch plates, or coming out of electrical sockets.

Signs of Bed Bugs

Bed bug infestations often leave tell-tale signs of their presence.

  • Black or rusty fecal deposits: looks kind of like a cluster of dirt specks
  • Molted shells: bed bugs shed their skin during each of the five growth stages
  • Eggshells: bed bugs colonies can produce hundreds of eggs in a short time, and once the nymphs hatch they leave behind the shell
  • Blood spots: their bodies fill with blood while feeding, and when they’re squished they leave small blood spots

If you’ve got a bug specimen that you suspect might be a bed bug, you can view our visual guide to identifying bed bugs.

How to inspect a mattress for bed bugs

The vast majority of infestations happen in and around mattresses. It’s also the first place we recommend that you look if you’re staying in a new location.

Step 1: Remove any blankets and sheets from the mattress and box spring.

It’s rare to find bed bugs free-roaming during the daytime. To perform an inspection, you’ll need to strip the bed entirely. Carefully pull back the comforter, flat sheet (if applicable), and the fitted sheet. Take a quick look at them as you do so and scan for any signs of bed bugs.

Step 2: Inspect the bed frame and headboard.

Not only do bed bugs wait close to their prey, but they also scurry back into hiding after a meal. Pest management specialists will thoroughly inspect a bed frame by lifting the mattress (and box spring) and looking at each of the joints and cracks in the structure.

Check behind your headboard, looking in each nook and cranny. Bed bugs love crevices that provide some darkness and safety. Don’t forget to look at any bolts or hardware that hold the bed frame together.

Note: sometimes hotels will have headboards that are directly attached to the wall. This is a bed bugs paradise — try to shine a light behind there and get a good look. If you don’t have a flashlight handy, you can always grab the lamp and try to maneuver some light in the gap between the headboard and the wall.

Step 3: Inspect all of the seams, tufted buttons, and tags.

On the mattress, you’ll find a series of great hiding spots. Around the perimeter of a mattress, you’ll find a strip on the outer cover that can be folded over. Look carefully there, on both sides.

Next, if your mattress is tufted with buttons, make sure to visually inspect each, lifting it a little if possible. Be extra cautious around any loose ones.

Mattresses ship with a variety of tags attached, which, if lifted or peeling, can make wonderful homes for bed bugs. Make sure to feel around each of the various tags and stickers.

Step 4: Flip the mattress and do both sides.

If you’re able to stand the mattress up against a wall, or flip it entirely and repeat the process. Experts say that you’re more likely to find bed bugs on the underside than you are the topside.

Step 5: Look at the box spring frame, particularly any joints or areas where the fabric has come loose.

Box springs are one of the most common places that exterminators find bed bugs. The good news is that they’re much more affordable than a mattress to replace.

The first thing to check is the fabric that seals the top and bottom. If it’s torn, you’ll need to carefully peel it back and gain access to the inner structure.

You’ll probably need a light for this (we recommend traveling with a flashlight for this reason), but you should try to visually inspect any joints or places where wood or metal overlap and create a pocket or crevice.

One last tip: always check the floor after you’re done because all of the motion and activity can knock the shells and skins loose. Even if you don’t find anything on the items, you can still discover an infestation that way.