They have feed bins that you can buy- that will hold large amounts of grain at a time, but they are pricey. We store our feed in 5-gallon buckets with lids or in the feeders themselves. I have 1 feeder that will hold a 50# bag by itself. We buy all of our feed at the feed store-would never even consider buying it a TSC or elsewhere because of the cost and they charge us tax. Our crumbles and layers feed is about $11.50 a hundred.