Bedbugs are found all over the world. Bed bug infestations were common in the U.S. before World War II and became rare after widespread use of the insecticide DDT for pest control began in the 1940s and 1950s. They remained prevalent in other areas of the world and, in recent years, have been increasingly observed again in the U.S. Increases in immigration and travel from the developing world as well as restrictions on the use of stronger pesticides may be factors that have led to the relatively recent increase in bedbug infestations. While bedbug infestations are often reported to be found when sanitation conditions are poor or when birds or mammals (particularly bats) are nesting on or near a home, bedbugs can also live and thrive in clean environments. Crowded living quarters also facilitate the spread of bedbug infestations.
People don't often consider bed bugs until they've left their mark. The appearance of flat, red welts in zigzag lines or small clusters is a key sign of bed bugs on humans. Bed bugs can also leave their bites in straight rows and, while they don't spread diseases to humans, their bites are quite irritating and scratching them can lead to bleeding and infection.
Scratching can cause superinfection, leading to impetigo, cellulitis, or folliculitis.27–32 Reactions typically resolve within one to two weeks without treatment.32 Systemic reactions have been described, including asthma, generalized urticaria, angioedema, iron deficiency anemia, and, very rarely, anaphylaxis.33–36 Although bedbugs have been suspected to be vectors of more than 40 microorganisms, there is no evidence that they are involved in the transmission of disease.5
Encasing mattresses is one of many good parts of a solution, but it doesn't get rid of the infestation. There are going to be other bugs away from the mattress, hiding nearby. What mattress covers are good at is entombing the sometimes large number of bed bugs that can live on a mattress. And because the covers tend to be uniform in color and don't have a lot of seams that the bugs can hide in, it's easier to see the insects.
You can identify a bedbug infestation by checking bedding, mattress seams, furniture, and wall fixtures for the bugs or their traces. Each bedbug is about the size of an apple seed, about 1/4 inch long. You will often see their droppings instead, which are tiny brown or red specks. You may also see small blood stains on sheets or mattresses when a bedbug has been crushed after feeding. Eggs about the same size as the adults might be seen in seams or cracks and you will also see their molted exoskeletons.
Mix 3 oz per gallon or 0.75 oz per quart and spray with a low pressure sprayer into the areas where the bed bugs are hiding. Typical areas include bed frames, headboards, under beds, baseboards, moldings, behind pictures,etc. Remember to apply in the joints and crevices of furniture. If the crack and crevice is too small, use an aerosol with a crack and crevice tip (recommendations are below.)
Just wondering if it is unusual for bed bugs to bite where you are clothed? I have 3 bites, in a diagonal line on one side and in a triangle shape on the other side of my pelvic area both which are covered by underwear at night. Then I have a random spot here and there on my legs. We have a plastic mattress cover on our bed but use dark sheets. As best I can tell there is no evidence of bed bugs. What do you think? Thanks!
In most cases, the only way to say for sure whether it was a bedbug that bit you is to search for evidence of bedbugs living in your home. "Once you start to notice the itchy bites, the second giveaway is the presence of small blood spots on your sheets or mattress, usually resembling patches of rust,” Durham says. Those spots are left behind after a bedbug has been smashed.
These nocturnal creatures can hide in beds, floors, furniture, wood, and paper trash during the day. We humans usually become their dinner during the night, with peak biting activity just before dawn.They can obtain their meal in as little as three minutes, after which they are engorged and drop off the host, then crawl into a hiding place to digest their meal. Bedbugs can live for 10 months, and can go weeks without feeding.