In small trees with light infestation, scale can be scraped off or infested branches can be removed and destroyed. In a large tree, controlling scale chemically is not always practical. The size of the tree, the need for specialized equipment and the cost may prohibit this solution. Scales are not easily controlled with chemical insecticides. The adults are protected by their waxy covering.
Crawlers are susceptible, however.
Oil sprays should be applied as a dormant treatment in spring or fall. Apply other materials when crawlers appear and repeat in 10 days. As with all pesticides, read and follow all label instructions and precautions. Chemical control of diseases and insects on large trees is usually not feasible since adequate coverage of the foliage with a pesticide cannot be achieved. This information is supplied with the understanding that no discrimination is intended and no endorsement by the Clemson University Cooperative Extension Service is implied.