The emerald ash borer (EAB) is an invasive species of beetle that has killed millions of ash trees in North America. The beetle attacks and kills ash trees by laying its eggs in the bark, where the larvae then hatch and feed on the inner bark and cambium, disrupting the tree's ability to transport water and nutrients.

There are several methods for controlling EAB, including:

Chemical treatments: Insecticides can be applied to the soil around ash trees to kill the larvae before they can emerge and attack the tree. This method is effective in preventing EAB infestations, but it can be expensive and may need to be repeated every few years.

Biological control: Some species of wasps have been shown to be effective in controlling EAB populations. These wasps lay their eggs in EAB larvae, killing the beetle before it can mature and reproduce. Biological control can be a cost-effective and sustainable method of controlling EAB, but it may take several years to become effective.

Tree removal: Ash trees that are severely infested with EAB should be removed to prevent the spread of the beetle to other trees. Removing infested trees can be expensive and time-consuming, but it is necessary to slow the spread of the beetle.

Preventative measures: There are several things homeowners can do to help prevent EAB infestations, including:

- Avoiding the transport of firewood from infested areas

- Inspecting ash trees for signs of EAB infestation

- Planting resistant ash trees

The decision of whether or not to spray for EAB depends on several factors, including the severity of the infestation, the cost of treatment, and the value of the ash trees. If you have ash trees on your property, it is important to be aware of the risks associated with EAB and to take steps to protect your trees.