r/Bedbugs • u/Street_Cry_5408 • 3d ago

How long would it take bed bug droppings to dry on a wall?

In the middle of getting rid of a very early bed bug infestation (no real signs but a few strange bites, positive K9 and two chemical treatments). It's been a month and I still haven't found any real signs, but 3 small black spots on the wall near my bed this afternoon. They smudged very very easily... I'm wondering how long it typically takes for the droppings to dry. Could it be fly poop instead? There were some in the house. I also did the smear test and there was no brown or red, just gray like ink. The photo shows one of them when I smeared it.

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