Why should you not seal holes in a house during late May through mid July?

Sealing holes in a house during late May through mid-July is particularly problematic because this period coincides with the time when bat pups are generally present. During this season, female bats give birth and care for their young. The pups are often too young to fly or leave the roost. If entry points are sealed during this time, it could trap the pups inside, preventing them from getting out to feed or being cared for by the mother. This could lead to a situation where the pups are left to die, creating both a humane concern and potentially increasing the health risks associated with decomposing wildlife inside the structure.

This time frame is critical from a wildlife management perspective, as it helps ensure that all young animals can mature and leave the roost before any exclusion efforts are initiated, thus helping to maintain the local bat population and comply with ethical trapping and relocation practices.