This is a great little waterer. Easy to clean, easy to carry, very stable, very sturdy, and the base and top snap securely and very easily back together. But be careful!! The top black lid must be screwed on firmly or your water will run out of the tray and onto the coop floor. After you remove the small black cap on the bottom opening make sure the water is glug, glug, glugging into the tray. If it is running into the tray evenly your cap is NOT on tight enough! I initially put a little vaseline on the gasket in the lid, and as long as I have screwed the lid on tightly I have had no more (ahem) problems. This is a really nice waterer.