Sealing as the permanent answer.
Trapping answers the animals that are present. Sealing answers the next ones that come looking. A house with open gaps is a house that keeps being found, no matter how many traps have been set.
Gnawing is constant for rodents, since their incisors keep lengthening for life. Foam, rags, expanding caulk and window screening are only a delay. We use materials that a tooth cannot grip.
Finding every opening.
We walk the exterior with a flashlight and a measuring tape, then repeat the search from the attic and basement. A mouse needs roughly the width of a pencil, and a rat roughly half an inch, so the list gets long on any building.
- Utility lines and pipes where they enter the foundation or siding.
- Dryer, bath and kitchen vents without caps or with damaged screens.
- Gaps beside garage door seals, sill plates and bulkhead doors.
- Soffits, fascia boards, ridge vents and chimney flashing.
- Gaps around window wells, cellar windows and old coal chutes.
Which materials suit which spot.
| Opening. | Material. | Why it holds. |
|---|---|---|
| Opening around a pipe or wire. | Steel mesh packed in, then sealant over it. | The mesh blocks teeth and the sealant locks it in. |
| Vent without a cover. | Metal vent cap or hardware cloth. | Airflow stays open while the opening is closed. |
| Frayed garage door corner. | New seal, plus flashing at the sill. | Closes the gap where mice squeeze in. |
| Chewed soffit or fascia. | Metal flashing screwed over the damage. | Replaces soft wood with a surface teeth cannot grip. |
| Split in the masonry. | Mortar or masonry sealant after mesh. | Fills the crack with a material that cures hard. |
Hardware cloth with a small mesh works well on vents, because it passes air and blocks animals. On old masonry, mortar repair may be the right answer, which is why Centerport's older stone and brick buildings often take longer to scope.
Older houses on the North Shore.
The Gold Coast area around Centerport includes the Suffolk County Vanderbilt Museum's estate, which began in 1910, and a National Register-listed mansion from 1897 on Idle Day Drive. Properties like these show that older construction is part of the local mix. For your house, older masonry means more joints to check, so ask the technician to inspect the base of every wall for gaps where mice or rats could enter.
Prefer talking to reading? Call the number and a person responds whatever the hour.
Dial (888) 686-4821Before the crew leaves.
We show you the list of closed openings and test each repair by hand. If a hole turns out to be larger than expected or sits behind a finished wall, we tell you before adding anything to the scope. You then decide how to proceed.
Sealing works best when preceded by trapping and followed, where needed, by attic cleanup. The page on rodent damage repair covers what to do with chewed wire coverings, ducting and insulation.
Dealing with droppings without a broom
Most of the job is avoiding airborne dust, and the steps beneath show how.
- Brooms and vacuums are the tools to avoid, because each one hurls settled waste back into the room.
- CDC guidance calls for roughly thirty minutes of ventilation in a closed space before any cleaning.
- Shield your hands during the task, then lather up under running water at the end.
- Wet it all, wait briefly, and gather it up with paper towels.
- Seal the bag firmly and set it with the regular household garbage.
- If something seems off later on, tell a doctor about the cleanup so they can weigh it.
Go to the agencies' own pages
Document titles and direct links come next.
- CDC hantavirus prevention pages: Where our sealing and housekeeping recommendations come from.
- CDC guide to wet cleanup after rodent contact: The CDC's own phrasing of the ventilate, soak and bag routine.