Mouse Control in Fairfax, VA

Most homes in and around Fairfax sit over a crawl space or a garage that connects to the living area, and both give mice a quiet, protected route into the house. A vent screen with a torn corner, a garage door threshold with daylight showing under it, or a gap where a dryer vent passes through siding are all common doorways. A mouse that gets into one of these voids can travel to a kitchen or a bedroom wall without ever crossing an open floor.

So we start at the crawl space access and the garage. Pull back any stored boxes near the garage wall and look at the corners where the slab meets the framing. Fresh gnaw marks or dark, greasy rub marks along that edge tell us mice are already using the space as a route into the house.

Two mice show up around homes in the Fairfax area, and the difference changes where we place traps and what we seal. House mice live with people year-round and prefer indoor voids. Deer mice come in from brush, woodpiles and creek banks at the edge of a lot, and they show up more in sheds, garages and crawl spaces than deep inside a house.

If you are unsure which one you have, do not guess from a single glimpse. We look at droppings, rub marks and entry points during the visit and match the plan to the animal.

If a pencil fits through the gap, a mouse can too.

Indoors, mice breed all year. Gestation is about 19 to 21 days, and a female can have 5 to 10 litters a year, with around 5 or 6 pups in each. That means a pair you hear in October can be a crowded colony by spring, especially inside a heated house where mice rarely have to fight through the cold.

For that reason, a few snap traps from the hardware store rarely finish the job. They remove the mice you catch, but the unsealed gap keeps letting new ones in, and the ones already breeding in the wall or crawl space keep producing. Speed matters, and so does a plan that cuts off the supply.

Treatment removes the mice that are already inside. Exclusion closes the ways in. Either half alone fails: trapping without sealing turns into a monthly routine, and sealing without trapping locks live mice inside with your food and your wiring.

• We inspect inside and out, mark every gap of 1/4 inch or more, and note where droppings and rub marks concentrate.
• We set snap traps and, where the site allows it, tamper-resistant stations in the spots mice actually travel, usually along walls, behind appliances and near the crawl space access.
• We seal gaps with materials mice cannot chew through, such as hardware cloth, sheet metal, copper mesh and mortar. Foam alone does not hold up through a freeze-thaw winter, so we do not rely on it.
• We return to check catches, remove traps and confirm that activity has stopped before the work is closed.

The sealing step is its own service when a house has many entry points, and you can read how it works on our rodent exclusion page. If the activity is concentrated in a garage or basement that connects to the living space, our garage and basement rodent control service covers those areas specifically.

Northern Virginia gets real cold snaps most winters, and mice start pushing toward shelter well before the first hard freeze. That means a Fairfax home can see mouse activity pick up from September through the coldest winter months, and it often stays steady until spring.

If your house has been quiet during the day because everyone is out, check the signs on a weekend morning. Look for droppings along baseboards and in the back of the garage, and listen at dusk when the house is still. Tell us your daily pattern on the call, because it helps us decide when to set traps and when to return.

Expect a technician to spend time looking, not just setting traps. The inspection sets the plan, and our rodent inspection and estimate page explains how that plan is put together. You do not need to move furniture in every room, only the areas where you saw droppings.