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SPEEDZONE CONCENTRATE is a post-emergent application to control a wide range of broadleaf lawn weeds in residential lawns, including; dandelion, chickweed, spurge, pennywort (dollarweed), knotweed, plantain, and clover. Contains Trimec and new superior technology for super fast knockdown of lawn weeds. Visible results in as little as 24 hours. Rainfast in 3 hours. Reseed in as little as 2 weeks. 20oz covers from 14,000-18,000 square feet.