Every morning, I give my girls chopped greens, leftovers (both solid and liquids), sprouts, etc. I am opposed to throwing this on the floor of their run. I used pumpkins when I got them for free but those are long gone. I then tried a ceramic food bowl from our deceased Bullmastiff (165 pounds - BIG bowl). The chickens left everything which I assume is because they didn't like pecking the hard surface. What do you use successfully? I also want something that doesn't tip over easily and can be cleaned. TIA!