Any advice for stocking up on dog food? I got a costco membership specifically for the dog food, which was recommended by several mustachians as being good quality for a good price. However, Costco is a bit out of my way, so I'd like to stock up and possibly only go every six months or so. Is it ok to have six months of dog food on hand, or will it go bad? I had an issue with cat food once, although I think it was just a bad batch.