I have a serious rats colony that has essentially take over my barn and coop. I tried to remedy the situation by destroying where they burrow and nest. Secured food, and bring it in at night. I put out poison bait stations, traps, and did some old fashioned rat hunting. I put a dent in their population, but a feel for not very long. I still see them in the coop during the day. The coop is very large and a haven for the rats. My barn is a place for my kids to play, hang out, etc. We stopped eating the eggs for fear of contamination. I feel that the only way I can fully deal with the situation is to sell my chicken and remove all food and water sources. Basically gut the barn, clean it, and start fresh. Do I have any other options at this point?