As with any pest infestation, there are multiple ways to bring the problem under control. The ideal method of spiraling whitefly elimination is to support biological controls. Allowing natural predators to feed on whiteflies will dramatically reduce their population, rendering them unable to inflict serious harm on landscaping.
Unfortunately, ideal does not mean practical. Biological solutions may take a long time to work. As of this writing, it is not recommended to try to introduce ladybugs or other predators to control a spiraling whitefly population.
Chemical options include contact insecticides and systemic insecticides.
A contact insecticide works by making direct contact with the unwanted bug. Often, the quality of the application will determine how effective the treatment is. Insecticidal soap and horticultural oil are both examples of contact insecticides. These products need to be sprayed directly on the insects to be effective. Whiteflies that do not make contact with the spray will survive and potentially reproduce. In addition, contact products can also kill beneficial insects. Contact insecticides have not been successful in controlling Rugose Spiraling Whitefly.
A systemic insecticide works by moving into the “system,” or the veins, of the treated plants and trees. When spiraling whiteflies feed on the nutrients, they also ingest the insecticide. Tree injections have proven to be successful in controlling the Rugose Spiraling Whitefly.