SePRO Total Pond Prevent Contains Sonar for Early-Season Floating and Submersed Weed Removal and Prevention Treats up to 8,000 sq. Ft., 4 Feet deep Apply early-season to prevent weeds from ever becoming a problem We do not ship to ca, ct, me, nj, ny or or wa. Orders placed from these states will be cancelled Systemic, complete kill including the roots Easy-to-apply granular formulation