Advantage technicians use high pressure water combined with specially designed hoses and nozzles to break up tough soap, grease, and sludge blockages. These materials, once broken up, are then flushed out of the line. Jetting can also remove many blockages that traditional methods cannot, including leaf blockages in down spouts and ice blockages in frozen drain lines. Our strangest job was removing a large stash of walnuts (courtesy of the local ground squirrel community) from a drainage tile around a house.