Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate controls more than 470 types of weeds as listed - and it won't harm your lawn when used as directed. This ready-to-spray formula kills by contact, down to the root, with visible results in as little as 5 hours. It controls all types of listed broadleaf and grassy weeds, including crabgrass, dandelion, chickweed, clover and yellow nutsedge (see product label for complete list). This product is rainfast in as little as 3 hours, so it won't wash off. Apply Spectracide Weed Stop For Lawns Plus Crabgrass Killer Concentrate when temperatures are between 45 and 90 degrees. Spray until wet to control weeds. Do not apply when daytime temperatures are above 90 degrees as lawn injury can occur. Read the entire label before using.

• Controls listed weeds - including crabgrass - not the lawn (when used as directed)
• Apply the first time you see crabgrass in your lawn
• Kills 470+ types of weeds, controls all types of listed broadleaf and grassy weeds, including crabgrass, dandelion, chickweed, clover and yellow nutsedge (see product label for complete list)
• Rainfall or watering 3 hours after application will not wash away effectiveness
• 40 ounce bottle treats up to 6,250 square feet