If the blockage is so severe that it requires a dig down please. As a home-run business, we are conscious of the ever-increasing costs of heating, which is why we offer first-time customers a full service of any kind of boiler for only €.! to add to that, we offer / emergency callouts! Talk to a professional plumber now. It works i used product in bathtub where water was running out slow water is flowing freely again! Our -hour emergency plumbing service.