Yeast in drains and septic tanks for maintenance?

Yeast in drains and septic tanks for maintenance? We  had a client recently say they put yeast down their drains to try to digest organic matter. Lipase enzymes break down fats, cellulase enzymes break down plant matter and toilet paper (cellulose), protease enzymes break down proteins (meat, cheese, dairy), and amylase breaks down starches and […]