“No rinse required on food contact surfaces” is a safety rating given by NSF International (previously the National Sanitation Foundation). The NSF testing guidelines are a continuation of the USDA product approval and listing program, including the FDA 21. Vital Oxide is rated “no rise required on food contact surfaces” category D2, meaning Vital Oxide is approved for use in commercial or residential kitchens to control bacteria, viruses, and mold without the need to wash/rinse the area with water after Vital Oxide is applied.