All-in-1 weed killer for lawns is a selective herbicide - it selectively kills weeds in the lawn but won't harm the lawn itself. It is a blend of proven weed killers designed to get broadfleaf weeds such as dandelion, clover, chickweed, and grassy weeds such as crabgrass and nutgrass/nutsedge. Kills 200+ weeds to the root. Rainproof in 1 hour. Ready-to-spray 32 oz bottle.