Use the Spectracide® Weed Stop For Lawns Plus Crabgrass Killer Concentrate to put an end to weeds in your lawn It kills over 250 types of weeds as listed including crabgrass The product produces visible results in just 8 hours This product kills broadleaf and troublesome grass weeds including dandelion chickweed and clover as well as crabgrass foxtail and yellow nutsedge see product label for complete list of weed types Apply when daytime temperatures are between 45 F and 90 F Do not apply to Bermudagrass when daytime temperatures exceed 85 F Features . Kills yellow nutsedge. See results in 8 hours. Kills over 250 weed types as listed including crabgrass. Kills tough lawn weeds. Won t harm lawns when used as directed. Treats up to 5 000 square feet Specifications . Capacity 32 oz. Weight 2 35 lbs