Every October my phone starts ringing with the same story. “Ed, I heard scratching in the ceiling last night.” Or, “I found droppings behind the coffee maker.” That’s no coincidence. When the nights turn cool across Salem, Gloucester and Cumberland counties, mice start looking for somewhere warm with food nearby, and your house checks both boxes.
I put a quick heads-up about this on our Google profile this month, but it deserves more than a few lines. So here’s the full rundown, from someone who’s been doing this work for more than 23 years.
Why Fall Is Mouse Season in South Jersey
A lot of us live right up against farm fields, woodlots and hedgerows, from Pilesgrove to Mullica Hill to out past Bridgeton. All summer, mice have plenty to eat outside. Once the fields are harvested and the weather turns, that changes. They follow the warmth and the smell of food, and the first solid building they reach is often a garage, a shed or your basement.
A Gap the Size of a Pencil Is Enough
Here’s the fact that surprises most homeowners: Rutgers Cooperative Extension notes that mice and rats can get in through openings a quarter inch or larger. That’s about the width of a pencil. The entry points I find most often on South Jersey homes:
- Gaps where pipes, wires and the AC line come through the wall
- Worn or missing door sweeps, especially on garage doors
- Openings around dryer vents and crawlspace vents
- Cracks in the foundation and gaps under siding
- Spaces around the chimney and where the roofline meets the soffit
Rutgers’ advice is to seal those openings with material that can’t be chewed. Spray foam by itself usually doesn’t last; mice chew right through it. Steel wool, hardware cloth, metal flashing and a good sealant hold up much better.
Signs You’ve Already Got Company
Mice are quiet and mostly come out at night, so you might never see one. Here’s what to look for:
- Small dark droppings in drawers, cabinets, behind appliances or along baseboards
- Chewed packaging, especially cereal, crackers, grass seed, birdseed and pet food
- Scratching or scurrying in the walls or ceiling after dark
- Shredded paper, insulation or fabric balled up in a corner (that’s nesting material)
- Greasy rub marks along walls where they run the same path every night
If you’ve seen one mouse, plan on there being more.
What You Can Do This Weekend
- Walk around the outside of your house with a flashlight and look low. If a pencil fits, a mouse fits.
- Keep birdseed, grass seed and pet food in sealed plastic or metal bins, not paper bags.
- Stack firewood away from the house and keep mulch and shrubs trimmed back from the foundation.
- Fix that garage door seal. It’s one of the most common ways in that I see.
- Wipe up crumbs and don’t leave pet bowls full overnight.
A quick word on those plug-in ultrasonic gadgets. Rutgers Cooperative Extension guidance for farm packinghouses says sonic devices aren’t acceptable for rodent control there, partly because there’s no way to tell whether they’re doing anything. I’d put that money toward sealing gaps instead.
Why Mice Are More Than a Nuisance
Mice chew, and that means wiring, insulation, stored boxes and anything in the pantry. They leave droppings and urine wherever they travel. Here’s one most folks don’t know: according to the NJ Department of Health, the ticks that spread Lyme disease become infected when they feed on infected animals, especially the white-footed mouse. Keeping rodents away from your house helps with more than the pantry.
How I Handle a Mouse Problem
When I come out, I start with a full inspection, inside and out. I want to know where they’re getting in, where they’re traveling and where they’re nesting. Then we go over a plan that fits your home. That can mean sealing entry points, putting traps or bait stations where they’ll actually work, and coming back to check. I use eco-friendly products, applied carefully, and I’ll tell you exactly what I’m doing and why. No call center. You get me.
You can read more about how we approach it on our rodent control page. If the noise in your attic sounds bigger than a mouse, that’s usually a squirrel or a raccoon, and our wildlife removal page covers those. Businesses get mice too, including restaurants, warehouses, farm buildings and rentals. If that’s you, take a look at commercial pest control.
Get Ahead of It Now
The best time to deal with mice is before they settle in for the winter. If you’re hearing things in the walls, or you just want someone to look the place over, call me at 856-599-9376. We’re open Monday through Saturday, 8 to 6. Zero Pests is veteran-owned and serves all of Salem, Gloucester and Cumberland counties, including Woodstown and Pilesgrove and Mullica Hill. NJ license #92354B.
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