What Kills Oystershell Scale

One systemic insecticide, dinotefuran, is effective against armored scales as it is more water soluble and mobile within the plant. Dinotefuran can be applied as a soil drench, for root uptake, or as a spray on the trunk, through which it is absorbed and subsequently translocated within the plant.

How do you get rid of oystershell scale?

1. If the infestation is limited on a host plant, pruning off the infested branches is a good place to start. …
2. Gently scrub off scale covers of overwintering scales with a plastic dish pad. …
3. Apply horticultural oil to the host plant before bud break in spring.

What insecticide will kill scale?

When the scale feed on the sap, they ingest the toxic insecticide and are killed. Acephate, imidacloprid and dinotefuran are three commonly used systemic insecticides that are effective against scale.