I have 13 full sized hens and 3 batams. I had a hanging feeder I think one gallon size and was having to fill it up once in the morning and once about supper time. We made the trough feeder yesterday morning and filled it up and no waste. I put a large cookie sheet under it to catch any waste and there was not any. Now the hanging feeder I would get a cup or two of spilled feed on the ground. We used a piece of plastic rain guttering some left over wood and thats a piece of electirc fencing wire across the top to keep the birds from walking in or standing in the feed. Im not worried that they all cant eat at the same time they seem to eat in social groups.