Are sprayed directly on foliage to become absorbed and carried through the entire vascular method from the plant. Sucking insects like aphids, mealybugs, and scale feed around the plant and die once the chemical is ingested. Residual Defense: Around eight weeks You will discover sprayers like this at any hardware https://jaiden9jsah.suomiblog.com/5-simple-statements-about-spraying-insecticides-explained-47788394