· Kills the toughest weeds and grasses to the root. Guaranteed! (Consumer Guarantee: If for any reason you are not satisfied after using this product, simply send us original proof of purchase and we will replace the product or refund the purchase price.)· For use in a tank sprayer· For use around flowers, shrubs and trees; on patios, walkways, driveways, gravel areas and mulch beds; along fences, edging and foundations; as well as large areas such as lawn replacements or garden plot preparation *Not for use around existing edibles.· Rainproof in 30 minutes· Visible results in 12 hours with FastAct Technology