I've been leaving food in the cat house and the stray hasn't been around in about 36 hours. It's been at or below zero during this time. I tried putting heating up some wet food the night before and leaving it under the string lights and it still froze solid. Does dry food turn into little ice chips you leave it out there? This is the second time since I started feeding him that it's gotten this below zero and it's odd that he doesn't show up on the coldest nights. Or perhaps that means he has a home - hope so.