Her neighbor’s trees were killed by the emerald ash borer. Now they’re falling onto her home.

There are several preventative emerald ash borer treatments homeowners can have administered to their trees annually in the spring.

Some of the most affordable treatments are sprayed onto trees and cost approximately $30 to $50 per each. Pricier, longer-lasting options can be directly injected into tree bark, said PJ Liesch, director of the Insect Diagnostic Lab at the University of Wisconsin-Madison.