Preen® One Lawncare™ delivers three essential lawn treatments in one easy step. First, it stops crabgrass and other lawn weeds of its type from growing all season long. It stops the seeds. It gets the seedlings. Second, it tackles and kills 250 of the toughest broadleaf lawn weeds, including dandelions. It kills them down to the roots. And third, it feeds the lawn for 8 weeks. 
Typical weed and feed products don’t prevent crabgrass. Another product is required. Preen One Lawncare does it all! Weed, feed and crabgrass control in one easy spring application.