Marketing InformationThis citrus scented Insinkerator® bio-charge cartridge replacement for evolution septic assist disposers is a cost-effective enzyme treatment. Bio-charge contains a natural microorganism that helps break down food waste and a citrus scent to help control odors from the sink and drain. Bio-charge is only for use with the evolution septic assist disposer and will last 3 to 4 months with average use. 1 cartridge of bio-charge equals 4 bottles of other septic treatments.