Product Description In Sink Erator Evolution Septic Assist Garbage Disposer MultiGrind Two grind stages let you quickly grind difficult food waste you wouldn't put in a standard disposer, like celery and potato peels. SoundSeal Makes the Evolution Septic Assist at least 40% quieter than standard disposers. 40-Ounce Stainless Steel Grind Chamber and Grind Component Handles more volume than standard disposers. Bio-Charge« Injection Technology Utilizes a natural microorganism to help break down food waste. 3/4 Horsepower Dura-Drive« Induction Motor Gives you more horsepower than standard disposers.