· Roundup Weed & Grass Killer₄ kills tough weeds and grasses to the root, including dandelion, crabgrass, poison ivy, clover (red & white), spotted spurge, and other broadleaf weeds· It is rainproof in as fast as 30 minutes and produces visible results in hours· Allows for planting 1 to 30 days after application (see booklet for details)· Use in or around flower beds and perennial landscape plants, around trees and shrubs, on patios, walkways, and driveways, gravel, or mulch beds, along fences and foundations, and edging around foundations and retaining walls· Roundup Weed & Grass Killer₄ Refill is the fast and easy way to refill your Weed & Grass Killer₄