GTM-11 is a D’limonene-based all-natural grease trap maintainer solvent. It Is designed to help prevent the buildup of greases and oils that accumulate In grease traps, drains, sumps and down pipes. Because it floats on top of the grease trap liquid, GTM-11 will both deodorize and provide a pleasant citrus scent. These residues decrease the effectiveness of the drainage systems and cause offensive odors. It is non-toxic, non-acid and non-caustic.