Bed bugs will also succumb to cold temperatures below 32°F, but the freezing temperatures must be maintained for a longer period (e.g., one to two weeks). Consequently, heating tends to be a better option throughout much of the country. Efforts to rid entire dwellings of bed bugs by raising or lowering the thermostat will be unsuccessful, although pest control firms are able to achieve lethal temperatures with supplemental heaters (see the subsequent section entitled "Heat Treatments" for more details). 
Bed bug bites are caused primarily by two species of insects: Cimex lectularius (the common bed bug) and Cimex hemipterus.[3] They are about 1 to 7 mm in size.[7] Spread is by the bugs walking between nearby locations or being carried within personal items.[2] Infestation is rarely due to a lack of hygiene but is more common in high density areas.[8][2] Diagnosis involves both finding the bugs and the occurrence of compatible symptoms.[5] Bed bugs spend much of their time in dark locations like mattress seams or cracks in the wall.[2]
The decline of bed bug populations in the 20th century is often credited to potent pesticides that had not previously been widely available.[44] Other contributing factors that are less frequently mentioned in news reports are increased public awareness and slum clearance programs that combined pesticide use with steam disinfection, relocation of slum dwellers to new housing, and in some cases also follow-up inspections for several months after relocated tenants moved into their new housing.[66]
About five weeks ago bed bugs were found out work, then two weeks ago they spread, pest control has seen continuously coming to check and yesterday they gave the place the green light. I work with a largely indigent populace, the office I work at was not sprayed, during the night at some point, I will feel painful stings, hours later I have been finding small lumps or even large and hard ones, Could it be bed bugs? There is a particularly painful lump on the back of my thigh, it’s very hard too.
Hi been getting bites since March. I have been to three doctors who all say the bites are not bed bug bites due to the pattern of the bites. This weekend I got bit again I have one on my leg and a two on my waistline. One of really big and the other are two small ones that are really red. I woke up in the middle of the night and saw a small bug on pillow and one on wall by bed and took a picture and from looking online looks like pic could be a bed bug or chigger. We have already checked the mattress a bunch and found no signs of bed bugs. Can I send you a pic so you can confirm what the bug might be?
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.
The first sign of a bed bug problem is obvious: the bed. After bed bugs feed on humans, they'll leave behind blood stains resembling small rust spots. These will usually be found near the corners and edges of the bed. Bed bugs also shed their skin, or molt, several times as they mature, so you may find their oval brown exoskeletons during your search.
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The size of bed bug bites varies with a number of different factors. Bed bugs inject an anti-coagulant along with their saliva when they pierce the skin to take a blood meal. This anti-coagulant is mostly responsible for how a person reacts to the bite and determines the size of the bug’s bite. Since people will have various sensitivities to the bed bug’s bite, the size of the bite will vary, as well. Another factor that influences the size of a bed bug reaction is the number of times a person is bitten. Bite reactions of people bitten many times are also variable, and their response may be either more or less intense as the number of bites increases.
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