Bed bugs usually come out at night and then go into hiding in cracks and crevices around beds and furniture when they aren't feeding. These hiding spots and seams, cracks, and crevices of your bed and furniture is the first place you should look for feces stains from bed bugs. Don't forget to look up as well when inspecting.
Unfortunately, there's no way for me to confirm that these pictures are of bed bug fecal matter. The last picture probably isn't, as bed bug poop doesn't come out that solidly. They tend to streak because the bed bugs poop while moving. They're classy like that. Those streaks could be a number of things: ink, charcoal, other pests.
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Bed bug fecal matter is dark in color made up of digested blood from their host. Bed bug feces is smooth to the touch unlike roach feces, which is more granular in feel. The fecal matter is easy to smear and can quickly stain mattresses, sheets, drapes, furniture, sofas and chairs. Below are some bed bug feces pictures.
How to Remove Brown Stain Spots From Bed Bugs Step 1. Spray the spots with an enzyme-based laundry stain remover. Step 2. Launder the bedding in the washing machine, adding your usual laundry detergent Step 3. Moisten the stained areas of the bedding with equal parts hydrogen peroxide Step
Bed Bug Cues and Miscues CTV's Canada AM recent report on the growing bed bug problem, "Don't let them bite: Why bed bugs are worse than ever" delivers sound information and repeats a few perpetual bed bug myths.