Pros: Design always keeps the tray full
Cons: Falls down
Another review noted this feeder might not work with mash, but it does work well with pellets. The only downside is the the chickens can spin it around and the wing nut comes loose. I find it on the ground from time to time, especially when it's empty. However, the feed always refills the tray because there is a cone inside that sends the pellets down. Metal feeders don't have that feature.