Specific to small larvae, it is not harmful to people, pets, birds, bees, and most other insects. A fungal pathogen, Entomophaga maimaiga , has dramatically reduced the number of gypsy moths. The fungus requires high rainfall and humidity to spread. The fungus has been distributed throughout Lucas County. It has proven most effective when used on large, stressed populations of the gypsy moth.
Supply is limited.
It is not available for homeowner use. All chemical controls, including biological controls such as Btk. Pesticides pose an environmental hazard when used incorrectly. The gypsy moth is here to stay in Northwest Ohio. Just as we have learned to live with other insects, such as the Japanese Beetle, we need to learn to live with the gypsy moth.