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Stain ID please

Hey! We found a lot of these reddish stains on and near our windows. Couldn’t find any insect though. Could you maybe help if this could be Bed Bug related? We really can’t tell where these stains come from… but we don’t have bites or anything else. Would be happy if you could help bc we’re kind of going crazy.


Hello, and welcome to our forum. Unfortunately, it’s impossible to determine whether or not these are signs of bed bugs or they’re from another of many potential sources. I would keep an eye out for other signs of bed bugs, as this would just be one piece of the puzzle.