replying to Adam Schwartz, Karen wrote: Has anyone found a definitive answer? I have this same issue in my house. I believe that it might be a type of slime mold called Fuligo Septica, otherwise known as dog vomit mold. It was in my garden over the summer and now I'm seeing it in my window sills. I'm really not certain but I do know that (in my case) it is definitely not bed bugs or fleas as some have suggested.
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4 years ago