Hi-Yield Killzall 16 Oz. Concentrate Weed & Grass Killer is a powerful and effective non-selective herbicide designed to eliminate weeds and grasses down to the root. Its double surfactant formulation ensures quick action and fast drying, providing enhanced rainfast protection within just 2 hours. This super concentrate is i for use around fences, paths, patios, sidewalks, curbs, and driveways, ing versatile application rates to handle both general and tough weed control. With a strong 41% Glyphosate formula, it delivers thorough and lasting results for your weed management needs. Model Number: 33691