WHEN TO USE Most effective when applied as dormant or delayed dormant spray during fall or winter when trees are leafless and insects, insect eggs, and mites cling to the bark.
Some summer uses, especially on pear trees.
Trees susceptible to scab may need a preventative spray before the buds open. Consult an expert for advice. HOW TO USE Read the label. Wear gloves and goggles, and avoid, breathing spray mist. May cause skin and eye irritation.