Mine eat half a can each morning and night so I usually don't have any left over but when I did I would keep it in the fridge for no longer than a day. Just a tip if you put the remaining food in a ziploc bag you can put it in a bowl of hot water for a few min to warm it. Or like I do for BB, she usually gets all the juice and leaves the food so I add hot water to hers. I just went and got their dry yesterday and it had gone up to$39 for a five pound bag. Still isn't that bad for the quality and seems tobe good for the both of them if I get the pink bag or salmon flavor. The chicken upsets my boys tummy