John, I have chickens. If I gather 200 snails in a bucket and dump them all in the chicken pen at once, the chickens eat a few and quit. If I sit down and throw them into the chicken pen one at a time, they run and fight over each one and will eat all 200. The first time I bought fly predators and dumped them into the chicken pen, they promptly ate everyone of them within minutes. Well, I can learn. Now I wait until nightfall, put the predators around the coup in the dark, put them under boards, etc and hopefully I am not just wasting money. Carolyn