What is an effective way to prevent squirrel entry into a building?

Sealing all holes and gaps is an effective method to prevent squirrel entry into a building because it directly addresses the ways in which these animals can gain access. Squirrels are agile and can squeeze through surprisingly small openings—often as small as a quarter. By thoroughly inspecting the building for any cracks, holes, or gaps and sealing them, you create a physical barrier that stops squirrels from entering.

Preventive measures like these are crucial because once squirrels find a way inside, they can cause significant damage by nesting in walls or chewing on electrical wiring. Additionally, filling in these gaps also helps prevent other pests from entering, enhancing the overall pest control strategy for the building.

In contrast, installing outdoor feeders could actually attract squirrels closer to the building, increasing the likelihood they will attempt to enter. Keeping windows open may provide easy access to squirrels, while removing trees near the building could discourage them but does not eliminate existing entry points. Therefore, sealing holes and gaps is a proactive and effective approach to preventing squirrel intrusion.