Generally it takes at least seven weeks for a bed bug to grow from an egg to an adult, so there should be no new adults from eggs during that period. Therefore, if many adult bugs are present one can reasonably assume that the infestation has been there for more than seven weeks.
“People may have bed bugs and not know it because many people have no physical reaction to bed bug bites,” Dr. Harrison says. “That's why it's important for people everywhere to inspect for bed bugs regularly.”
Most people do not realize they have been bitten until bite marks appear anywhere from one to several days after the initial bite. The bite marks are similar to that of a mosquito or a flea — a slightly swollen and red area that may itch and be irritating. The bite marks may be random or appear in a straight line.
Ultimately, it can take mere minutes to travel from room-to-room, with infestations growing in a matter of weeks or months. Every day, bed bugs can lay between one and 12 eggs, and anywhere from 200 to 500 eggs in a lifetime.
A bed bug showing up a month or two post-elimination is most likely a reintroduction. Studies have shown that bed bugs are highly attracted to previous harborage. In fact, repellency studies have shown some products to have repellency in clean harborages, but not on harborages with previous activity.
When bed bugs are in their dormant state, they do not need to feed. According to the University of Kentucky, bed bugs can survive 2 to 6 months without a meal. In extreme cases, when the temperature drops to 55°F or lower, they may survive a year or longer.
Rusty or reddish stains on bed sheets or mattresses caused by bed bugs being crushed. Dark spots (about this size: •), which are bed bug excrement and may bleed on the fabric like a marker would. Eggs and eggshells, which are tiny (about 1mm) and pale yellow skins that nymphs shed as they grow larger. Live bed bugs.
In most cases, bed bugs thrive inside a home whether it's cold or warm outside. In fact, they can be extremely active in the winter months, especially if you keep your home nice and warm to combat the cold. So if you notice bed bugs in your home, don't wait for the cold outdoors to scare them away.
The first clue suggesting that you may have a bed bug infestation is often the presence of itching bites. However, bites reactions are quite variable and may not be due to bed bugs at all. Be aware of the other signs that bed bugs leave behind: fecal spots, molted skins, and aggregations.
Yes, bed bugs can come back after a year.
Bed bugs are excellent at reproducing and building up their colony size if they aren't fully eliminated. If you used a DIY treatment that didn't eliminate all the bed bugs in the colony, then there's always the chance that they'll remain in hiding until they've reproduced.
The presence of only one fertile female bed bug in a friendly environment such as a single or multiple family dwelling is an infestation that is waiting to happen.
A bed bug sheds its skin as it grows. Shed skins will be found in areas of infestation. Where there are bed bugs, there is sure to be fecal evidence. These insects leave black streaks, black patches, and tiny black droppings in areas of infestation, and on the surfaces they travel across.
Bed bugs have another defense system that prevents you from feeling you've been bitten. They inject an anesthetic (numbing) and an anticoagulant (stops bleeding) into your skin when they bite. You may not notice you've been bitten until the bite marks appear, which can take from one to a couple of days after the bites.
Often a great indicator of how long an infestation has been around is the number of adult bed bugs present. Generally it takes at least seven weeks for a bed bug to grow from an egg to an adult, so there should be no new adults from eggs during that period.
Don't count on bed bugs to go away on their own. In theory, they can. In practice, they don't unless several highly specific circumstances occur. Your best bet is professional bed bugs treatment.
Anyone, anywhere can get bed bugs. Having bed bugs doesn't mean that a home, office, school or other building is dirty. It just means that the bed bugs found a place to live where there are places to hide and people to bite.
Closely inspect the grooves in hardwood flooring, especially beneath or around the bed. Look along the bottom and top of the baseboards. Pay special attention to any cracks in the wood or nail holes. Peel back the carpeting from the tack strip to look for the bugs.
In dormant states, bed bugs of course cannot breed and produce eggs but the bugs can survive for one to two years. In fact, the colder it is the longer they can survive and as soon as a host is reintroduced, they will “come back to life” and continue their nefarious ways.
Myth 3: Bedbugs can typically live a year without a meal
Scientists debate this point, but evidence suggests that at normal room temperature, about 23 degrees Celsius, bedbugs can only survive two to three months without a blood meal.
Bed bugs typically tend to find a hiding place and stick to it. For this reason, many people never see live bed bugs until the infestation becomes severe. Only when their hiding places are disturbed, like when you're packing for a move, will live bed bugs be easily discovered.
Bed bugs will not go away if you sleep in another room. Instead, they will follow you and create new colonies wherever you move.
Clean bedding, linens, curtains, and clothing in hot water and dry them on the highest dryer setting. Place stuffed animals, shoes, and other items that can't be washed in the dryer and run on high for 30 minutes. Use a stiff brush to scrub mattress seams to remove bedbugs and their eggs before vacuuming.
However, if there are not too many, then chances are that they will not bite every night. On average bed bugs feed once every 3 to 10 nights and spend the rest of the days resting and digesting their meals.