As I was reading past posts, I thought I should put in a post about this. Back in the spring, I wondered if our food storage was ok in the garage. It wasn't. Or at least some of it wasn't. Our big problems were moths and heat. The moths got into everything that was bagged (rice, powdered sugar) or bagged and in a cardboard box (baking mix, cake mix, hard taco shells). This last weekend, I opened a can of evaporated milk and it was solid-I think it got cooked!
So, my advice is be careful of what you put in the garage. If it's all in big tubs with lids, less of a problem. But watch things in cans because they get so hot. I'm just sayin.