Back during Y2K everyone we know that put any food back in 5 gallon buckets used a Blue Bag that was on a roll as a bucket liner. They are 20" wide X 25" Tall, with a pleat in the sides for expansion. We tied them off with waxed nylon string. Flash forward to 2011, and all I can find is expensive Mylar Bags, which are not needed for lots of things we store. Does anyone have a source?