Most rodent problems begin with a gap. Before the wet season, when animals are looking for dry cover, a few hours spent closing openings can prevent weeks of noise and cleanup. The goal is not perfect sealing, which is hard on any building. It is closing the most likely entries and checking again later.
This plan suits a Saturday morning, a flashlight and a notebook. Stay off ladders if you are not comfortable, and leave work at height to someone who is.
Stage one: walk the outside.
Start at the foundation and move around the house. Look at vents, pipe sleeves, the base of siding and the garage door. Then look up at the eaves, the soffit and the roof edge. Mark each spot where you see a gap, a loose cover or soft wood.
- Foundation vents with torn or missing mesh.
- Gaps around pipes, cables and gas lines.
- Dryer, bath and range vent covers without a screen.
- Soffit and fascia joins that have shrunk or rotted.
- The bottom and sides of the garage door.
Stage two: gather the right materials.
The kit is simple. Galvanized hardware cloth blocks gaps and vents. Sheet metal covers damaged edges. Copper mesh or metal wool packs small holes beneath sealant. A caulk gun, a tin snips and gloves complete the set.
| Opening. | Material. | Note. |
|---|---|---|
| Pipe or cable sleeve. | Metal collar with sealant. | Allow for movement and moisture. |
| Foundation vent. | Hardware cloth behind the grille. | Keep airflow to the crawlspace. |
| Soffit or fascia gap. | Sheet metal flashing. | Matches trim, protects from rain. |
| Garage door base. | New seal and a kick plate. | Check the slab for gaps as well. |
Stage three: close what you can reach.
Work from the largest and most used openings to the smallest. Push mesh into a hole before sealing, so that a rodent cannot pull the filler out. Cover vents from the inside edge, and keep airflow in spaces that need it.
If you hear noise, stop. An animal may be inside, and closing its way out can cause damage. In that case, call, and trapping comes first.
Think this is what you have? Tell us on the phone and we will say what it probably is.
Ring (888) 686-4821Wet-climate weak spots.
In a rainy region, wood near gutters, decks and trim can soften. Soft wood is easy to gnaw, so probe suspicious spots with a screwdriver. If it sinks in, the wood needs repair. Clogged gutters hold water against the fascia, so clean them before the season starts.
If your lot is wooded, trim limbs that touch the roof. If you are near open green ground, such as the Clear Creek Trail corridor or the shore by Silverdale Waterfront Park, look at the side facing it, because that edge may be where animals arrive. We use those names only as reference points.
What to leave to a professional.
Work on roofs, large structural gaps and anything involving wiring or gas should go to a qualified tradesperson. For rodent entries that are hard to reach or numerous, exclusion work covers the whole house. Damage that has already occurred goes through repair.
A yearly check.
Put a reminder in your calendar for early autumn. Walk the foundation, check the sealed spots and look for new gaps. After a big storm, look at vents and flashing. Small, regular checks keep a sealed house sealed.
A weekend work plan.
Spend one Saturday morning outdoors armed with a flashlight and a notebook, and bring a ladder only if you are at ease on one. Photograph every gap and jot its size. By noon you hold a list that beats general worry, and you can sort the items into do-it-yourself and hand-off.
Safety guidance from the CDC cleanup page
Meant for homeowners, the list keeps dust low while a technician is still on the way.
- Moisture goes on first and wiping comes second, with no dry sweeping anywhere in the sequence.
- Give a musty storeroom or attic thirty minutes of cross ventilation ahead of any cleanup.
- Keep your hands covered for the whole task, then scrub.
- Saturate the waste, leave it for five minutes, then collect it on towels.
- Wipes and debris share one closed bag that joins the ordinary garbage, and hands stay covered around any body.
- A doctor alone can judge the seriousness of an exposure, so call one if you develop fever or labored breathing.
Where the safety advice comes from
Our advice about cleanup and about poison draws on two federal sources, and both appear below.
- Hantavirus Prevention, from the CDC: How a household limits exposure by closing gaps, storing food and clearing nest sites.
- Cleaning Up After Rodents, from the CDC: Airing out a closed space, wetting droppings rather than sweeping, and bagging waste with care.