Mice procreate so fast that a couple can become dozens in a matter of weeks. Then the real population explosion happens. Mouse Magic is a repellent that is supposed to last for weeks and be relatively safe for use around children and pets. I haven’t used this product myself but I like the idea.
John’s Tip: Call me old fashioned, but I would still use some good ‘ol spring traps baited with peanut butter along with the Mouse Magic. At least until I get a chance to thin the population way down. Repellents are generally considered medium pressure control products. Basically that means they will do a better job of preventing a new problem than they will at eradicating an existing problem. – Happy Hunting!