Contact your vet, I think permetrin is toxic to cats while wet, so you might be able to spray your laundry room and keep the cats out until it dries.They don't have ear mites. They might have fleas although we treat them regularly for that, but all pesticides have a lower success rate nowadays. I like your idea Wickedchicken6 but we are sadly way too far out of the gate for that, like I said she's been inside for several days in several places. Good to know freezing kills, the sunporch won't be an issue then! The laundry room has me somewhat freaked out though...