Bio-Active Grease Trap Treatment from Walex Products Company can help treat and maintain grease traps in commercial establishments. It quickly digests the fats, oils and grease, and contains a powerful blend of stabilized bacteria and pure enzymes designed to revitalize the system, according to the maker. It restores clogged pipes to avoid costly replacements and drainfield backups. It is 100 percent biodegradable and environmentally safe for all grease trap systems. It is sold in two granular formulas that contain more than 450 billion colony-forming units, and it is available in a liquid formula that provides enzymatic and biological digestion with more than 200 billion colony-forming units. 800/338-3155; www.walex.com.