If you think that most sludge found in a system is consistency of toothpaste, you can understand that physical particles flowing and scraping against it at high speed will dislodge it better than fast flowing water by itself (standard power flushing).
Hence our technology is better at cleaning central heating systems when compared with standard power flushing. Now think of 1000’s of pellets that being forced against the sludge at high speed, over and over. Result, are a very clean pipe! Check our
videos for more proof.