Grasses and weeds can crowd out your carefully planted perennial food plots. Using the right herbicide can help ensure that your food plots perform their best and last much longer. Arrest max is a selective grass herbicide that will control most grasses, without harming clover, alfalfa, chicory or any Whitetail Institute perennial food plot. Adding Surefire Crop oil plus to the spray tank can increase effectiveness of Arrest max on perennial or mature grasses. Arrest max is rain fast in one hour. 1 acre.