Thank you for the testimonial. It is always good to know how well the product works. I suggest that you monitor the system through the summer and perhaps about September or October add another bottle or two of Septic Scrub and the annually thereafter a bottle a year. You should also do all of the things necessary to help keep the system in good shape. Probably one of the easiest is to spread the water usage out as much as possible. Spread the laundry and showers so that everyone is not taking them back to back. A little water all the time is better than a lot of water some of the time.