I use ceramic mini tart dishes for my food bowls. Even the crickets usually stay in even though they could jump out. I also usually put a big chunk of carrot in the bowl with the feeders to keep them in one place. The sides of the bowl are a about an inch tall so my toads don't notice the bugs unless they happen to peek in. So I bury it in the soil so it is level with the ground. They find the food much easier that way.