What is considered the most important method for bat exclusion?

The most important method for bat exclusion is denial of reentry. This technique focuses on ensuring that bats cannot re-enter a structure after having been excluded. It involves sealing off entry points where bats might access attics, eaves, or other areas of a building. This is crucial because simply removing bats or trapping them does not address the underlying issue; if the entry points are not secured, bats can return.

Denial of reentry is often implemented after the bats have been safely removed from the premises, typically following a period when it is safe to do so, such as late summer or fall. It is vital to conduct thorough inspections of the property to identify any potential openings and to use appropriate materials to seal them, thereby creating a long-term solution to prevent future infestations.

Other methods, while they may play a role, do not provide the comprehensive solution that denial of reentry does. Trapping may temporarily remove bats but does not prevent new bats from entering. Releasing bats outside does not ensure they won't return. Removing food sources can help deter bats but is not a reliable long-term method since bats can often find food elsewhere. Therefore, denial of reentry stands out as the most effective and necessary approach for keeping bats from reoccupying