Organic farmers have used garlic extract to repel insects from crops for many years. This spray includes potassium bicarbonate as a buffer, and will repel aphids, thrips, white fly, cucumber beetles, spider mites, and aid in the control of rust, mildews, and fungi. Use freely on herbs, edibles and veggies up until harvest. The garlic fragrance will dissipate rapidly to humans but linger for insects and small critters. 33.8 fl. For outdoor use only.