THETFORD #94079. AQUA-KEM Liquid HOlding Tank Deoderant, 32 oz. Powerful odor control -Liquefies waste and breaks down tissue fast to prevent clogging. Powerful detergents clean tank walls and drain lines. Works around the clock in all weather conditions. A variety of convenient forms for maximum ease of use. 100% biodegradable liquid and environmentally safe when disposed of properly.