Seal entry points, eliminate insect food sources, and maintain your home exterior to keep lizards out.
To keep lizards out of your home, you must seal all cracks around windows and doors with caulk or weatherstripping. Additionally, reduce their food supply by controlling insect populations and remove standing water. Keeping your yard tidy and clearing away debris near the foundation prevents lizards from finding shelter and easy access indoors.
Common Entry Points to Seal
- Windows and Doors: Inspect frames for small gaps and apply silicone caulk to close them.
- Vents and Pipes: Cover outdoor vents with fine mesh screens to block entry while maintaining airflow.
- Door Sweeps: Install sturdy sweeps on all exterior doors to eliminate the space between the door and the floor.
Environmental Management Strategies
- Reduce Insect Populations: Lizards enter homes to hunt for food. Use light traps or natural sprays to minimize bugs.
- Manage Humidity: Use dehumidifiers in damp areas like basements or laundry rooms to discourage lizards seeking moisture.
- Clear Outdoor Debris: Move woodpiles, tall grass, and leaf litter away from the home foundation to remove hiding spots.
Comparison of Prevention Methods
| Method | Effectiveness | Estimated Cost |
|---|---|---|
| Exclusion (Sealing) | Very High | Low |
| Insect Control | High | Moderate |
| Natural Repellents | Moderate | Low |
Lighting and Vegetation Maintenance
Lizards are often attracted to porch lights because the light draws in the insects they eat. Switching to yellow bug lights or keeping outdoor lights turned off at night can significantly reduce the number of lizards hanging around your doorways. Furthermore, trim any overhanging branches or shrubs that touch the house walls. These act as natural bridges that allow reptiles to climb directly onto the roof or upper-story windows.
Internal Maintenance and Habits
Consistency inside the home is just as important as exterior sealing. Ensure that indoor trash cans have tight-fitting lids to avoid attracting flies, which are a primary food source for small reptiles. Fix any leaking pipes or faucets immediately, as lizards are attracted to the moisture. Regularly cleaning behind large appliances can also prevent lizards from finding warm, undisturbed nesting spots within the house.
Using Natural Deterrents
Lizards have a sensitive sense of smell and often avoid pungent odors. Placing garlic cloves or onion slices near entry points can discourage them from entering. Alternatively, spraying a mixture of water and peppermint oil or cayenne pepper around window sills creates a scent barrier that lizards find unpleasant.