I always keep my feed in the bag it came in. But, I put the bag in a trash can with a tight fitting lid. That way, I'm not mixing new feed with old, and if there are ever any grain mite or other insect contamination issues, it's most likely limited to a single bag. And, if there are ever any problems with a particular bag, I have that bag, the lot number and all of the information so I can take it back. I've had to return bags of feed on several occasions, and the store is very good about replacing defective feed.