Zinsser Mould Killer and Remover effectively removes dark stains caused by mould, fungus and algae. It is ideal for use in bathrooms, kitchens and areas of high humidity and can be used on internal surfaces such as tiles, wood, plaster and wallpaper. Containing a fungicide that removes mould, it is ideal for preparing mould stained areas before painting to give a better, longer-lasting paint finish.