Buster Bathroom Plughole Unblocker has a unique formulation that tackles the problem of hair, soap and sludge which are the leading causes for bathroom blockages build up. Whether it’s a full blockage or slow draining water, Buster gets to work quickly, dissolving hair and clearing sludge to keep water flowing freely. 3 dosesReplacing 1857-2 -��Buster Shower Bath Unblocker 1L