I work and have my cars in a huge old barn. Mice are a constant problem. But then so are squirrels and dirt daubers. I do the best that I can to keep the mouse population down, but it is a constant battle. The cat thing is a non starter for us. They just kill anything and everything that they come across. When they bring the crippled baby bunnies up to the house, or kill a chipmunk, my wife cries. It is just too much for her in order for me to control the mice in the barn. So, I have to eliminate the cats and control the mice. The cats are a larger target, so they are not a problem. The wife feeds the little colored birds, and chipmunks, and bunnies. We even have flying squirrels now that the cars are gone. All that and mice, too. But no cats.
That's the problem with cats, they're killers. They kill everything. I hate mice and would rather have a snake around than a mouse.
BTW traps with peanut butter work great, it that don't catch them put a piece of bacon on the trap.
