I have to come up with a solution for rat control. I have a killed 15 rats near the chicken coop in the last week. They got into my home made soap supplies stored outside. They have been eating felsnaptha soap, really. I'm using snap traps and peanut butter, which accounts for half the kills. The Crossman pellet rifle has killed the other half. Rats can climb trees with amazing speed. They can't out climb the rifle. The problem with traps is they kill little brown birds in the morning if I don't set them off. Anybody got a recommendation?