Why Mice Move Into New Hampshire Homes Every Fall (and How to Stop Them)
The first frost sends field mice looking for warmth. A mouse needs a gap the width of a pencil, and most homes have dozens.
The usual doors
- Garage door corners and weather seals
- Gaps where gas, AC and cable lines enter
- Foundation cracks and unscreened vents
- Bulkhead doors and sill plate gaps
Why traps are not enough
You can catch mice all winter and never win, because more keep coming in. Real rodent control means trapping the ones inside and sealing the outside with metal mesh and sealant — the exclusion step most people skip.
A note on poison
Bait alone often leads to mice dying inside walls, and then a call for dead animal removal. We use it carefully and only where it makes sense.