Dealt with mice and rats in blinds all my life. Only solution we ever came up with is really building blinds that seal up tight. Will take more time and cost a bit more but mice and rats are just terrible when you are hunting. Also, it is fun to hunt them with an air rifle or 22 during the off season. We get them around our feeder every year and shooting them is fun and helpful to keep the numbers down. Won't help in all areas but leaving certain predators to do their job helps too.
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