I scrap my steel food cans and alum cat food cans if they are clean and rinsed out cause if not they attract bugs and critters. But thats how i got my cat, someone dumped her at 3 months old. She was trying to lick dryed food remanence from empty cat food cans my sister gave me i left out in the driveway. It was living/hiding in my garage for a week in December and i couldnt leave that poor cat out there in the cold.