I poured mine in the "rock" garden beside my drive thinking it would keep the grass from growing there and it did for a short time, but then I had a weed explosion! I couldn't keep the weeds cut back or killed for long, the more weeds I got the more sw I put on it, and the more weeds that came up. I now pour it on my front lawn and where I do the grass will turn really really green and grows so fast it bogs my mower down in the summer.