Appears to do the trick
This is a once a month use product that not only keeps your septic tank treated with helpful bacteria, it also helps keep the main lines clear of grease and organic blockages. The product also states that it can be used to treat sluggish or clogged systems by using as a once a day treatment for 8 days. This will hyper load the system with bacteria and allow them to quickly digest the organic matter blocking or slowing the system. I have treated my system with this product and have had no problems so far.
Dave via Homedepot.com Okeechobee