First check that the infestation is serious enough to warant treatment.Scales need to be obvious and numerous on leaves and twigs to justify treatment.Where required,spray with an appropriate oil spray from the Problem Solver Handy Guide.Avoid spraying during hot weather.Avoid continuous use of insecticide sprays that are disruptive to benefical insects.Regularly monitor the orchard so that action can be taken before scales build up to the point of infesting fruit.