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RazoRooter® II

RazoRooter® II is a diquat-based herbicide registered by the U.S. Environmental Protection Agency (EPA) for the removal of nuisance tree roots in sanitary sewer line collection systems and received a classification of “evidence of non-carcinogenicity for humans” (USEPA Diquat R.E.D. Facts, July 1995). In 2014 the EPA further approved an amendment of Duke’s diquat dibromide labels to lower the signal word from “warning” to “caution”.


Making safety a top priority, the professional crew sets up and quickly gets to work. They insert a hose from manhole to manhole, preparing to fill the affected sewer pipe with RazoRooter® II for root removal. Foam with a thick, shaving cream consistency like Duke’s Razorooter® II is essential to adhere to roots and travel up the laterals. Duke’s exclusive dense foam also packs more active chemicals in the spaces between the bubbles and has a longer retention time. Once the hose is inserted, the foam is released, compressing against pipe surfaces and penetrating cracks, joints and connecting sewers. The foam kills tree roots on contact, and over time the roots decay naturally and slough away. The best part? Duke’s applications prevent root-related stoppages for 3-5 years. We guarantee it.

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