Just a short note to thank you for a wonderful product! Your little grubs have been hard at it for about 7 weeks now and the results are amazing! Our septic bottle tank is situated by our track which is a public right of way for walkers. I have been concerned about the aroma around the access for years and therefore have been having the contents removed every year. When I lift the lid now there is absolutely no unpleasant odour, and of course the drain off is practically uncontaminated water; perfect for the environment. Your claim that this would be the case is not an exaggeration.