Which of the following strategies is NOT recommended for handling bat guano?

Using a vacuum to remove bat guano is not recommended due to health concerns associated with the aerosolization of pathogens that may be present in dried guano. When guano is disturbed, it can release harmful spores, such as those from histoplasmosis, into the air, which poses significant respiratory risks to individuals handling it.

In contrast, sealing the area to prevent further infestation is a safety measure to limit bat access and the potential for future buildup of guano. Wearing a mask during removal helps protect individuals from inhaling any airborne contaminants that could be present. Wetting the guano before removal effectively minimizes dust and reduces the risk of spore release, making it a safer technique. Therefore, using a vacuum poses more hazards Than the other strategies mentioned.