How to Get Rid of Mice in the House in Little Silver, NJ

Look for droppings first. Mouse droppings are dark, pointed and about 1/8 to 1/4 inch long, usually found by the dozens along walls, in drawers and behind appliances. Rat droppings are closer to 1/2 inch and blunt, which changes the plan, so measure one before you buy anything.

Then check for grease smears along baseboards, gnawed food packaging, shredded paper or insulation nests, and a stale, musky smell in closed cabinets. Scratching in walls at dusk or after midnight fits mice, since they are mostly active at night. If you hear heavy thumping or see droppings the size of a grain of rice or larger, read our guide on telling mice from rats by sound and droppings before you set anything.

Mice run along edges and rarely cross open floors. Place each trap flat against a wall with the trigger end touching the baseboard, at right angles to the wall so the mouse runs into it. Put them where you found droppings, behind the refrigerator and stove, under the kitchen sink, inside the garage and along the basement sill.

Use more traps than seems reasonable. A common practice is a pair of traps every 6 to 10 feet along an active runway, and a dozen for a busy basement is not overkill. Mice are curious about new objects, so many snap traps set at once catch more than one or two placed cautiously. Check them every morning and reset, wearing gloves to remove catches.

What bait works best?

Peanut butter pressed into the trigger works well, and a pea-sized amount is enough. A larger glob lets a mouse lick the bait and leave. If peanut butter is not working, try a bit of hazelnut spread, a small piece of bacon, or cotton fiber or dental floss tied to the trigger, which mice take for nesting. Change the bait if a trap sits untouched for several nights.

• Do not scatter loose poison pellets in a house. Mice carry it into walls and die where you cannot reach them, and pets, children and wildlife can be poisoned.
• Do not rely on glue boards alone. They are slow and stressful for the animal, and they can catch pets and other wildlife.
• Do not sweep or vacuum dry droppings. That puts particles in the air, so follow the safe cleanup steps for mouse droppings instead.
• Do not stuff steel wool alone into gaps. Mice pull it out or chew around it, and it rusts.
• Do not spray foam into a gap and call it sealed. Mice can chew through standard expanding foam.

Traps are a fair first step, but a few signs mean the problem is bigger than you can trap out. If you catch several mice a night for more than a week, you likely have a breeding group in a wall or attic. Mice breed year-round indoors, with a gestation of about 19 to 21 days, and one female can have several litters a year.

Other signs are droppings in the attic or above a ceiling, gnawed wiring, fresh activity in a room where you already caught mice, and a smell you cannot trace. Chewed wiring can contribute to fire risk, so do not wait on that one. This is the point to call for a mouse control visit, where a technician looks for the entry points and nests you cannot see from the floor.

Trapping removes the mice you have. Sealing stops the ones you do not have yet.

A mouse fits through a gap of about 1/4 inch, roughly the width of a pencil. Walk the outside first, then the basement, looking at where pipes, cables and gas lines enter, at the foundation sill, around dryer and range vents, and at the gap under garage doors. Our guide on how small a hole a mouse can fit through lists the common ones.

Fill small gaps with copper mesh or hardware cloth cut to size, then cover with cement, mortar or a sealant made for the material. Fit door sweeps, screen vents, and cap the chimney. Large or high gaps, especially near rooflines, are work for a rodent exclusion crew with the right ladders and materials.

Older Little Silver homes, roughly mid-century and earlier, often have block or stone foundations where mortar has crumbled, plus utility lines cut through the wall with loose gaps around them. Check the mortar joints and pipe penetrations first, because those are the doors mice already know.

Damp crawl spaces and low foundations are common near the river and its streams. Cool, wet nights in fall push mice toward warm, dry framing, and after a nor'easter they look for higher ground. If your home backs onto a stream or tidal waterway, walk that side of the foundation first, and see our note on rodents after storm flooding.

A technician starts with an inspection of the home from roof edge to foundation, checking attic, basement, garage and crawl space for entry points, nests and droppings. From that, they decide where to trap, what to seal, and whether any insulation or contamination needs cleanup. Baiting, when used, follows the product label with tamper-resistant stations placed out of reach of children, pets and wildlife.

If mice are already loud overhead or you smell something that suggests one has died, a same-day visit may be worth asking about. We keep a 24/7 line, and where the schedule allows we come out the same day, so calling directly is the fastest route when you cannot wait.