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The holes are small, caught them early, will have to remember the bounce brand. Like the dryer sheets more than moth balls for sure!
2 Cats work fairly well.
I got 2 cats. useless lazy critters. mouse traps and peanut butter work better.
Peanut butter is the best bait for traps, but only if you can access then and not have to tear something apart, or take a cover off.