Fleet Duo is a carnauba infused Wash & Wax product that provides superior lubrication and shine. This easy-to-rinse formula promotes sheeting of water on the vehicle surface to help minimize residual spotting on the vehicle surface. Fleet Duo will not cause excessive foam build-up in reclaim systems. Fleet Duo is a stand-alone product, and is injected into the wash water of drive-thru mini express tunnels that do not use drying agents/rinse aid applications. A final rinse using fresh or spot free water is recommended.