Using the same active ingredient as Roundup, Shore-Klear is safe and effective on nuisance emergent aquatic weeds in and around the shoreline. Excellent on cattails! Please consult with us by e-mail to determine your target plant susceptibility and dosage required. Always read the product label before applying. This item cannot be sold to CA, CT, IA, ME, MT, NE, NH, NJ, VT and WA.