Septico 250gSeptico Septic Tank Treatment 250g Breaks down waste, grease, fats and paper Helps avoid blockages Removes unpleasant smells. Reduces the frequency of tank emptying. Use 1 x 250g sachet every 6 months Septico is a septic tank conditioner with bacteria which breaks down waste, grease, fats and paper. It will help maintain a healthy system by breaking down organic matter, avoiding blockages and removing unpleasant smells. 1 x 250g sachets every 6 months