I keep them out in the open, as they will get very warm if they’re discharging in an enclosed container or in foam padded cells inside a case of some sort. And don’t let them discharge packed touching against each other.
Do you have a ring cam? Put your food and everything else in front of it. If you don’t, Big5, maybe Walmart, and several other sporting good stores sell trail cameras that you can set up near your cat food and you’ll be able to see who has been...