@Anonymous
I only had something similar happen once, early on in the first lock down. Toilet paper was scarce and, for a while, really difficult to find around here. It was crazy how people stockpiled.
At the same time, I noticed that my guests seemed to be using it up more quickly than normal. I kindly asked them to be a bit conscientious about it, i.e. use what you need, but maybe don't go wild with it as I'm finding it tricky to stock up seeing as the shelves are empty.
I only realised later that one of my guests (a visiting doctor from Spain doing a rotation in an NHS hospital, no less) was stealing it and hoarding it in her room. I guess just I in case we ran out...