Removing animals is only half the job. If the gap they used stays open, new ones follow. Sealing, sometimes called exclusion, is what turns a short fix into a lasting one. This guide covers what to seal, what to seal it with and the order to follow.
Where gaps are found.
Rodents use openings people do not notice. Look first at places where something passes through the wall: pipes, cables, vents and dryer ducts. Then look at moving parts such as garage doors and door sweeps, and finally at the roofline where materials meet.
| Location. | Typical gap. | Material that holds. |
|---|---|---|
| Pipe and wire penetrations. | Space around the pipe. | Steel mesh packed in and sealed over. |
| Garage door bottom. | Worn or short seal. | Replacement seal and corner repairs. |
| Foundation vents. | Rusted or bent screen. | Heavy galvanized or stainless mesh. |
| Roofline and soffits. | Gaps where materials meet. | Metal flashing and mesh. |
| Dryer and exhaust vents. | Broken flap or cover. | Vent cover with a tight screen. |
What stops them and what does not.
Rodents chew. Anything soft will not last: foam, rags, plastic and plain caulk. Use materials they cannot chew easily, such as steel mesh, sheet metal and cement-based filler, and use sealant only to hold them in place.
- Use steel mesh, flashing or metal collars as the main barrier.
- Use sealant to hold metal in place, not as the barrier.
- Avoid steel wool alone, which can rust and fall away.
- Replace damaged screens instead of patching them.
Order of work.
The order matters. Find the entry points, remove the animals and then seal. If you seal first, animals inside cannot leave and may chew a new way out, often into the living space.
Our trapping service clears the animals, and exclusion follows once the house is clear. If you want to confirm there is no one left inside, ask the technician to check before closing the last gap.
A room-by-room checklist.
- Kitchen: check under the sink and around pipes and the dishwasher line.
- Garage: check the door seal, corners and any wall penetrations.
- Attic: look at vents and the roofline from inside, in daylight.
- Crawl space: check screens, the access door and pipe holes.
- Outside: look at the base of walls, utility entries and dryer vents.
Mark each gap you find with tape and take a photo. A list of gaps helps a technician quote the work, and your inspection can confirm what is missing.
Room, hour, sound: give us those three details and the first visit starts in the right place.
Dial (888) 686-4821Repairs and upkeep.
Sealing is not a one-time event. Weather, settling and remodeling open new gaps. A yearly walk-around, plus one after major storms, catches them early.
If a repair involves rot or water damage, we recommend the right trade. For wood and structural work, see rodent damage repair, which covers what we handle and what we refer out.
A realistic expectation.
No house is perfectly sealed, and no technician promises that. The goal is to close every opening you can find and to make the remaining ones hard to use. A thorough job usually involves many small repairs instead of one big one, and that is normal.
After sealing, listen for a week or two. A quiet house is a good sign, and any new noise is a reason to call so the technician can check for a missed gap.
When an estimate lists many small openings, that is normal and not a sign of padding. Every pipe, vent and corner is its own task, and a long list usually reflects a thorough inspection.
Stop before you sweep, spray or bag
Consider this the baseline routine for any house with droppings, stains or nest material.
- Never sweep or vacuum droppings or nests while they are dry, since that sends contaminated particles into the air.
- Let air move through a stale crawl space or storage room for about thirty minutes before you begin.
- Gloves go on before you touch anything soiled, and a careful handwash finishes the job.
- Apply disinfectant to the waste and the surface under it, wait about five minutes and wipe it with disposable towels.
- Tie the waste in a bag and place it in the household trash. A dead rodent is never lifted with bare hands.
- Muscle aches, fever or short breath after exposure are matters for medical advice, not for a pest company.
Public guidelines behind this advice
Want to verify the guidance? Start with these pages. They are general references, not recommendations of any business.
- CDC page on rodent cleanup: Cleanup guidance explaining why sweeping or vacuuming dry waste is advised against.
- EPA page on rodenticide restrictions: Why the strongest products are held back for licensed professionals, and why shelf products arrive only as ready-to-use stations.