The Duke’s Guarantee
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Duke’s guarantees to kill all the roots in every sewer we treat and to eliminate main line stoppages caused by live tree roots. If live roots are found in a sewer within six months after the application, or if a treated sewer plugs up and floods due to tree roots during the guaranteed period, we will re-treat that section, at our own expense, or remit to the customer 100% of the payment we received to treat that section of sewer. Any section of sanitary sewer we treat will not plug up and flood due to tree root obstructions for a period of two years. The guarantee period begins on the date of treatment and ends two years after the date of treatment. When we perform a repeat application within six months of the expiration of the previous guarantee, the guarantee is extended for an additional three years.
