How Lizards Enter Homes and How to Block the Gaps

Lizards fit through very small gaps, so prevention is about sealing.

The short answer

Check around windows and door frames, pipe and cable entries, AC pipe holes, exhaust fans, vents and cracks. Seal with suitable sealant, mesh or door sweeps. Fit screens and keep doors closed at dusk. Reducing insects also reduces visits.

Common entry points

• Gaps around AC pipes and cables.
• Window and door frames.
• Exhaust fans and vents.
• Cracks in walls and ceilings.

Blocking

1. Seal gaps with sealant or foam.
2. Fit mesh over vents.
3. Add door sweeps.
4. Use window screens.
5. Trim plants touching walls.

When to call a professional

If the problem is widespread, keeps returning or you are unsure what you are dealing with, a professional inspection will save time and avoid wasted effort.

Frequently asked questions

Can lizards climb glass?

Geckos can.

Do I need professionals?

For hard-to-reach gaps.

How tight must seals be?

Little more than a pencil width.

Will sealing remove existing lizards?

Release them outdoors first.

This guide is part of IPest's complete resource on household pest control. For identification help, prevention and treatment options, see our full household pest control guide for Bangalore.