Love the dead rat picture!
I have a hardware cloth apron 3 feet wide around my pen. My other pen has most of the ground inside it covered with hardware cloth. If I notice some activity anywhere, I set traps. I keep the food locked up at night. It's maintenance, and eliminating food supply. Not much more you can do. I would have thought that rocks would stop it. I guess nothing works 100% of the time. : (
I have a hardware cloth apron 3 feet wide around my pen. My other pen has most of the ground inside it covered with hardware cloth. If I notice some activity anywhere, I set traps. I keep the food locked up at night. It's maintenance, and eliminating food supply. Not much more you can do. I would have thought that rocks would stop it. I guess nothing works 100% of the time. : (