What is an effective way to prevent rodents from entering a building?

Sealing cracks and holes is a highly effective way to prevent rodents from entering a building. Rodents, like mice and rats, can squeeze through very small openings, and these cracks can often be found around foundations, windows, doors, and utility lines. By sealing these entry points with appropriate materials, such as caulk, steel wool, or expanding foam, you create a physical barrier that reduces the likelihood of rodents gaining access to the interior of the building.

This proactive approach minimizes the risk of infestations, making it an essential component of pest management strategies. On the other hand, keeping doors open can inadvertently provide a pathway for rodents; using bait indoors addresses the problem after it has started but does not prevent initial entry; and increasing food availability can attract rodents, making the problem worse rather than preventing it. Thus, sealing cracks and holes serves as a fundamental preventive measure in rodent control.