A common question about mouse control: How often do I need to inspect and service for mice? We do not use bait for mice in a single family home. We prefer not to use mouse bait at all, but some properties like large multi-unit buildings, buildings with poor foundations and garages benefit from a secure bait placement to control mice. Trapping is more effective and the dead rodent can be removed. Bait or trap applications are only effective when maintained. First, baits inspections are every 7 to 14 days when they are active and no less than once a month other wise. Next, trap inspections are monthly or every other month. Traps need regular maintenance to keep them refreshed with attractants.
Mice only need an opening the size of a dime to enter. The photo above is of a view up the side of a foundation in Newton. The seam where the two foundations create small gaps at the sheathing behind the siding that mice found and expanded by gnawing away at the opening. The brown sebum mark on the concrete is from continued use of the trail. The foundation needs regular inspections with a mirror to find and fill openings. New England homes with wood frames and stone, concrete or wood foundations need to be inspected all year round. Those materials expand and contract at different rates and filling openings is a lot like filling potholes, they may reopen.