Kilrock Pro Mould and Mildew Remover instantly destroys all mould in damp places, inside and out. This trade strength formula effortlessly eliminates mould from sealant, tiles, plaster, fibreglass, grout, and areas with poor air circulation and ventilation. The bleaching formulation prevents mould resurfacing, increasing the amount of time needed between deep cleans. It is easy to use: spray, wait, and wipe. Made in the U.K.