I have been having what appears to be an infestation of tiny beetles in my bathroom. Been going on for a couple of months and I was worried about them coming from some structural rotting, which was pretty unlikely due to the location.
Turns out they are coming from a box of Rid X in the corner. Looked it up and it is a thing.
So if you keep that box around for the whole 5 months, you may want to put it in a ziplock bag.