BioGuard Strip Kwik Degreaser - Quart BioGuard Strip Kwik Filter Cleaner and Degreaser - 1 Quart Effective degreaser that unclogs sand, cartridge and DE Filters Restores your filter to optimal efficiency Cuts through thick oil, grease, dirt and other contaminant buildup on your filter elements *Item will ship USPS Priority Mail if ordered individually or pack of 2 and will ship same day, if not next day of order.