Which method is NOT recommended for bat colonization control?

The recommended method for bat colonization control involves practices that support the humane management of bats while ensuring they do not become a nuisance. Sealing entry points is crucial as it prevents bats from accessing buildings, and this method is often part of a comprehensive exclusion approach. Regular attic ventilation can also help maintain an environment that is less appealing to bats, although it is not a primary method of control.

Using repellents is often considered a non-lethal approach to deter bats from roosting in specific areas. However, after considering the effectiveness and safety of various methods, the use of insecticide dusting is discouraged. This technique poses significant risks to the health of bats, other wildlife, and even humans. It could lead to unintended consequences by harming the bats and disrupting the local ecosystem. Moreover, insecticides are not specifically designed to repel or control bat populations and may not provide a sustainable solution. Hence, employing insecticides is not recommended for bat colonization control because it conflicts with humane practices and ecological balance.