HG mould stain cleaner instantly and easily destroys all mould, making the dirty black spots disappear. Mould, moisture or weather spots are common in silicone joints between the bathtub and tile wall, in the shower cubicle and in stucco. For removing mould, we also have a foam spray variant, the HG mould cleaner foam spray. This variant has a unique foam formula, a less pungent smell, is even better at targeting the mould and, of course, gives less chance of splashing.