Several insecticides are available for spraying greenbugs. I suggest homeowners use insecticidal soap. This treatment is not toxic to people, pets and wildlife, and preserves lady beetles and other predators that may be in the area. Apply commercial insecticidal soaps according to label directions or substitute liquid dishwashing detergents by mixing 5 tablespoons of detergent per gallon of water. Soap sprays must be thoroughly applied to be effective.
Spot treat only the infested area and a small buffer beyond.
A second application 10 days later will be required for best results. Two spray applications are also recommended when using traditional insecticides such as malathion, Orthene or Dursban. Iowa State University , Ames, Iowa. This information subject to a usage policy .