Below are a few examples of drain surveys we’ve undertaken in london and surrounding areas. Rodding cables, aka “snakes” just bore holes through the blockage hydro-jetting is superior because it removes the blockage from the inner wall of the pipe, returning back to full fl. Are happy to customize solutions that work for every client, need, and budget in. For a 5thâ year in a row (2010-2014). How much money you could save each year will depend.