Tired of crabgrass and weeds taking over your lawn? Spectracide Weed Stop is a powerful concentrate. This is a 40oz bottle, brand new. It's a post-emergent herbicide, meaning it kills weeds that are already growing. The primary active ingredient is 2,4-D dimethylamine salt. It's a contact and systemic killer, so it gets the leaves and the roots. You mix it with water in a tank sprayer – this concentrate makes an equivalent of 12.5 gallons of ready-to-use spray, covering up to 20,000 square feet! It's for outdoor use on lawns only. It's compatible with Bermuda, Bluegrass, Fescue, Rye, Tall Fescue, and Zoysia grasses. Kills crabgrass, bindweed, plantain, and many other common weeds. IMPORTANT: This item cannot be shipped to Texas or New York due to state regulations. It's not safe for kids or pets until dry, and not for use on edible plants. The UPC is 071121966247, model HG-96624-4, made in the USA. Take back your lawn with this professional-strength weed control.