Control aquatic weeds including duckweed, milfoil and hydrilla safely and easily with Sonar RTU herbicide. Apply this ready-to-use formula directly to your pond. It’s absorbed by aquatic plants, with any remaining chemical being broken down by sunlight. Results are noticeable in 3 to 6 weeks. For best results, apply Sonar RTU from February to June.
Note: Consult with appropriate state or local water authorities before applying this product.