Actavate is a bacterial enzyme drain treatment for septic tanks and digesters. Use it regularly to keep drains free-flowing and trouble-free. Actavate eliminates the odor from seldom-used drains, the perfect product for old-style outhouses. Actavate is a 100% active product with no fillers. Allow the product a little time and it will eat up almost anything that is lingering in your drains, returning them to flowing again. A dry product, it is available by the pound and a little bit goes a long way; you only need 1 to 2 tablespoons per treatment.