I'm fogging the house to get rid of fleas. Anyone know where I could spend three hours with my cats while I wait?

My cats have fleas, and I’m trying to get rid of them. They just visited the vet today to get medicine, and have been treated, which will be killing the fleas on the cats. The vet said I need to use a flea bomb to kill the fleas in the house.

I’ve never done this before, and I have no idea where to take my three cats for three hours while I wait (2 hours for the fogger to finish, then I have to come back to open windows, etc, and wait another hour before I re-enter the house).

Thoughts?