Why do my mice come back every fall?

Because the entry gap was never sealed. Baiting removes the mice that are inside today, but if the door is still open, new mice walk in next fall. Exclusion is what closes the door for good.

How do you handle bats and squirrels humanely?

We install one-way exclusion doors over the entry points so animals can leave to forage but cannot get back in. After a few days we confirm they are gone and seal the openings permanently. No animals are trapped inside, and it complies with Wisconsin wildlife law.

Is exclusion better than just setting traps?

For rodents and wildlife, yes — dramatically. Traps only catch what is already inside. Exclusion stops them from entering in the first place, which is the only way to break a recurring problem for good.

Stop Them at the Source

Exclusion & Sealing

Q: What materials do you use to seal gaps?

Copper mesh and caulk for small cracks (rodents cannot chew copper), expandable foam for larger voids, concrete patch for foundation gaps, and vent guards and chimney caps for wildlife. We match the material to the gap.

Sealing the gaps, cracks, and entry points that let pests in — the single most effective, longest-lasting pest control step there is.

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The Science

Exactly How It Works

Exclusion is pest-proofing: physically sealing the gaps, cracks, and holes pests use to get in. It is the most effective long-term pest control step because it removes the cause, not just the symptom. A mouse needs only a 1/4-inch gap — the width of a pencil — to squeeze into a home, and most homes have dozens of such gaps.

We inspect every potential entry point — utility penetrations, foundation cracks, vents, soffits, doors, and the roofline — and seal them with the right material for the gap: copper mesh and caulk for small cracks, foam for larger voids, concrete patch for foundation gaps, vent guards and chimney caps for wildlife.

Exclusion is what breaks the yearly cycle. Baiting mice without sealing the gap they came through means they return every fall. Treating bats without sealing the roost opening means they re-colonize next spring. Sealing the entry is what makes the solution permanent instead of temporary.

The Process

Step-by-Step

01
Inspect every potential entry: utility penetrations, foundation cracks, vents, soffits, doors, and the roofline.
02
Seal small gaps with copper mesh and caulk — rodents cannot chew through copper.
03
Fill larger voids with expandable foam, and patch foundation gaps with concrete patch matched to the surface.
04
Cap chimneys, repair screens, and install vent guards and one-way doors for wildlife and bat exclusion.
05
Re-inspect to confirm every gap larger than 1/4 inch (for mice) or 1 inch (for rats and squirrels) is sealed.

What We Use

Products & Materials

Copper mesh + caulk

The gold standard for rodent gaps — copper cannot be chewed through, and caulk seals it airtight.

Expandable foam

Used to fill larger voids before sealing; often combined with mesh so rodents cannot hollow it out.

Concrete patch

For foundation cracks and larger structural gaps that need a rigid, permanent seal.

Vent guards & chimney caps

Physical barriers that keep wildlife and bats out of vents, chimneys, and attic openings.

What It Targets

Mice, rats, bats, squirrels, raccoons, and every crawling insect that follows gaps indoors.

When We Use It

Every rodent and wildlife job — exclusion is what breaks the yearly cycle, not the bait alone. Also the foundation of a preventative program for any home.

What to Expect

Before, During & After

Before

We do a full exterior inspection — foundation to roofline — and document every gap, with the size noted. You get a clear list of what needs sealing and why.

During

Sealing is hands-on and may take a few hours depending on the home. For wildlife, we often install one-way doors so animals can leave but not re-enter, then seal the entry after.

After

The entry points are sealed for good. For wildlife, we return after a few days to confirm the animals have left and remove the one-way doors. The gaps are now closed permanently.

Safety

Exclusion uses physical materials — mesh, caulk, foam, patch — not pesticides, so there is no chemical exposure. For wildlife, we use humane one-way exclusion so animals leave on their own rather than being trapped inside.

Common Questions