To prevent the entry of rodents into buildings, there should be no openings larger than?

To effectively prevent rodents from entering buildings, it is crucial to ensure that there are no openings larger than 1/4 inch. Rodents, such as mice, can squeeze through very small gaps, and allowing openings this size or larger can make it easier for them to invade spaces where they might create nests or access food sources. The 1/4 inch guideline is widely acknowledged in pest management practices as a threshold that limits access for most rodent species, helping to maintain a barrier against infestation.

In addition to this key measurement, it's worth noting that although some larger openings might seem manageable, they can still provide an entry point for pests if not adequately sealed. Consequently, monitoring and managing these entry points is vital for maintaining a pest-free environment in buildings.