HI-YIELD Weed & Grass Stopper has the same active ingredient as PREEN except it is a lot less expensive.
HI-YIELD eliminates back breaking hand weeding and will prevent weed seeds from sprouting, reducing the need for tough and time consuming hand weeding. Without weeds, your valuable plants can grow bigger and stronger. Easy to apply: simply sprinkle at the recommended rate on top of soil or mulch and water it in. Once activated by watering, it forms a weed control barrier in the top layer of soil.