Where Rodents Enter Your Cottage (And How to Stop Them)
AdaptationBiologyburrowing rodentsCalifornia Ground SquirrelGrey Squirrel Controlground squirrel controlhabitsMicepest controlpest preventionRatsRodentrodent controlRodentsSquirrels

Where Rodents Enter Your Cottage (And How to Stop Them)

Written by Marketing Department
March 3, 2026
Share Post Pin E-mail

Rodent entry points in your cottage

Cottages are rodent heaven.

Long periods of vacancy. Quiet surroundings. Wood construction. Easy food access. Minimal human disturbance.

Mice can squeeze through openings the size of a dime. Rats need only slightly more. Squirrels? They chew their own doors.

If you own a cottage, understanding where rodents enter is the first step in stopping them.

1. Roofline & Eaves

The roofline is one of the most common entry zones — especially for squirrels and rats.

  • Gaps between fascia boards
  • Loose or rotting soffits
  • Open eave vents
  • Shingle edges near overhanging branches

Squirrels are strong climbers and will chew through weak wood or aluminum soffits. Once inside, they nest in insulation and chew wiring.

2. Chimneys & Flue Openings

Rodent entering cottage chimney without cap

An uncapped chimney is essentially an invitation.

Birds, squirrels, raccoons, and sometimes rats use chimneys as vertical tunnels into attics or fireplaces.

If you don’t have a properly secured chimney cap, you have a vulnerability.

3. Foundation Cracks & Gaps

Concrete foundations crack over time — especially in climates with freeze-thaw cycles.

  • Hairline cracks widen seasonally
  • Gaps where foundation meets siding
  • Utility penetrations through concrete

Mice commonly enter at ground level and immediately move into wall voids.

4. Deck Attachments & Crawl Spaces

Decks create hidden transition points between outside and structure.

Rodents travel underneath decks and exploit:

  • Ledger board gaps
  • Improper flashing
  • Unsealed crawl space vents

These areas are shaded, protected, and rarely inspected.

5. Utility Line Penetrations

Mouse entering around exterior utility pipe gap

Electrical lines, plumbing, propane lines, and AC conduits all require wall penetrations.

If these openings aren’t sealed with metal-backed materials, rodents widen them.

Foam alone is not enough. Mice chew through it easily.

6. Doors & Garage Gaps

Rodent slipping under cottage garage door gap

Cottages often sit empty for weeks. Door seals degrade.

  • Worn weather stripping
  • Warped wood doors
  • Garage door corner gaps

Even a 1/4" gap is enough for a mouse.

7. Attic & Gable Vents

Squirrel climbing into attic vent opening

Plastic or lightweight vent screens are no match for rodents.

Squirrels chew through them. Rats pry them open. Once inside, attic insulation becomes nesting material.

8. Windows & Seasonal AC Units

Mouse entering gap beside window air conditioning unit

Window-mounted AC units and poorly sealed frames create temporary seasonal entry points.

When cottages close for winter, these gaps are often forgotten.

Why Cottages Are Especially Vulnerable

Unlike primary residences, cottages:

  • Remain vacant for extended periods
  • Are often surrounded by forest or shoreline habitat
  • Contain food storage from prior visits
  • Receive infrequent inspections

Rodents move in when you move out.

How to Protect Your Cottage

Prevention involves three layers:

1. Seal

Use metal mesh, hardware cloth, and proper flashing to block structural gaps.

2. Remove Attractants

Store food in sealed containers. Remove bird seed and pet food before leaving.

3. Deploy Automated Trapping

Because cottages sit empty, continuous protection matters. Automated lethal traps provide ongoing control without daily resetting.

If you’re serious about protecting your property, inspection and protection should happen before you leave — not after you discover damage.