Spectracide One-Shot Weed and Grass Killer3 with Accushot works fast to kill unwanted weeds and grasses. This powerful formula kills from the leaves to the roots and prevents regrowth for up to five months. Plus, it works quickly, with visible results same day. Clear out unwanted vegetation on walkways, driveways and patios. Avoid spraying this product onto desirable plants, lawn grasses, shrubs or trees. Spectracide One-Shot Weed and Grass Killer3 gives you control over weeds and grasses, roots and all. Use this refill with the Accushot Sprayer from Spectracide One-Shot Weed and Grass Killer2. The extendable wand provides accuracy and a continuous spray. For best results, apply on a sunny day with temperatures above 60 degrees Fahrenheit. This formula is rain safe within 1 hour. Pets and people may re-enter treated area once sprays have dried.