It's helpful but not a total solution of course. When we first bought our property and discovered a rat issue, out boys would get dressed up for "recon," and go out with their airguns. They could take them out when they came to a bird feeder (wild bird, not chicken.) But you need to get the nests with all of the family also... Just one bite, did the trick here. I had to have total elimination before taking all of the steps to sanitize and exclude (the steps from Howard E.) It's works.
