We have had 2 mouse issues in the last few years. I found the most effective way was to plant little pieces of dog food for a few days to see where they liked to go. Then, I would bait the traps w/ dog food in the popular spots. After a couple kills, I replace the dog food without traps. When the food stops disappearing, it means no more mice. I have used the kind that SNAP and the kind that clamp. Both seem to work.
