When rodent proofing for rats, which of the following openings should be sealed?

In the context of rodent proofing for rats, it is essential to seal any openings that could serve as entry points for these pests. Rats are capable of squeezing through surprisingly small spaces; however, research shows that they can typically enter through openings that are 1/2 inch or greater. Therefore, sealing all openings that meet or exceed this size threshold is crucial for effectively preventing rat infestations. This approach helps maintain a robust barrier against rodent entry and minimizes the chances of these pests finding their way into buildings.

Other opening sizes, like those smaller than 1/2 inch, may not be as significant for rat proofing, as rats would not be able to enter through them. Hence, focusing on openings that are specifically 1/2 inches or greater provides a clear and practical guideline for ensuring comprehensive rodent-proofing measures.