Rocksolid, 5 Gallon, Paver Lock, Specialized Formula That Locks Down The Joint Sand Between The Pavers To Inhibit Weed Growth & Create A Longer Lasting Look, Penetrates Below The Surface While Enhancing The Natural Appearance Of The Paver, Can Be Used With Any Color Paver, Suitable For Use On Driveways, Patios, Walkways & More, Superior Water Repellant Through Never Wet Properties, Enhanced Protection Against Stains, Is Safe To Use Near Grass & Plants.