Big D SEWER D is ideal for deodorizing all types of wastewater and sewage treatment plants. It is especially beneficial in municipal treatment plants since their odors do not stem from one source. Well-tested and proven effective, SEWER D is not a masking agent – it actually kills odors, regardless of the source. SEWER D works in any climatic condition, hot or cold, wet or dry. SEWER D is Non-Flammable and Non-Toxic. SEWER D is extremely versatile. It may be fogged, sprayed, dripped or poured. It is compatible with all known water and sewage treatment chemicals and will not change their properties. SEWER D will not kill algae, aerobic bacteria or anaerobic bacteria. Laboratory tests have shown that application directly into activated sludge did not harm the bacteria at concentrations up to 1000 ppm.