BS-921 solid grease trap maintenance from Simple Solutions Distributing minimizes hydrogen sulfides and buildup of sludge, reducing odors, fecal matter and grease compounds, according to the maker. It dissolves gradually over 30 to 45 days, allowing for continuous waste treatment. It is an improved biological product, formulated and packaged for use in restaurants where water temperatures are higher. To assure optimal performance of these organisms, they are produced and blended together with high-potency nutrients and stimulants. It contains specialty penetrants and surfactants that loosen and digest heavy grease deposits, assisting in their biodegradation. It is packaged to maximize performance in restaurant applications. 866/667-8465; www.industrialodorcontrol.com.