What is the minimum size of an opening that allows mice to enter?

The minimum size of an opening that allows mice to enter is indeed 1/4 inch. Mice are known for their ability to squeeze through surprisingly small spaces due to their flexible bodies. An opening as small as 1/4 inch is sufficient for an average adult mouse to navigate through.

This characteristic highlights the importance of thorough inspections for any potential entry points when considering pest control. Smaller openings or gaps can often be overlooked, but knowing that mice can manage to enter through 1/4 inch is crucial for effective prevention strategies.

Larger openings would present no challenge for mice either, but the focus here is on the smallest threshold size that facilitates their entry, which is properly identified as being no less than 1/4 inch.