I put away the chicken feed last night and only left out the corn muffin and baking soda mix. The rats did not like it. They killed two more of my chicks

one was dragged out of the coop and eaten and another one was just killed, I think just to spite me. They were roosting on the lower part. I have the remaining two younger chicks on the higher roost with the adult chickens. Hopefully the rats can't get up there's. It's about five feet high. I'm going to have to take care of this rat problem this weekend.