Green Cleaner can be sprayed on plants of every age, from clones through harvest. Kills spider mites and their eggs, predatory mites, aphids, white flies, broad mites and russet mites on contact, and unlike other products, spider mites do not get immune to Green Cleaner. Washes powdery mildew right off the plant. All natural, you can even use Green Cleaner on the day of harvest. This all-natural, 100 percent concentrate product can be used as a solution to dip sensitive new cuttings in, to prevent garden contamination when outsourcing plant starts, and can be used from start through harvest as a treatment.