Spectracide Weed & Grass Killer Concentrate 32 oz., is a nonselective weed and grass killer that kills weeds and grasses down to the root. Its formulated for spot treatment of weeds and grasses on patios, walkways and driveways; around flowers, shrubs and trees; and along fences and foundations. Plant new flowers, trees and shrubs in the treated area after just 1 day. For best results, apply during warm, sunny weather when the temperature is over 60 degrees. Mix with water and apply with a tank sprayer at the rates directed on the product label. Completely cover the leaves of the target vegetation. Protect desirable plants with a piece of plastic or cardboard if desirable plants are accidentally sprayed, wash with water immediately. Do not mow, cut or otherwise disturb treated vegetation for at least 7 days following application. Do not use on or around edible feed or food crops.