Blast away tough mould and stains in minutes 750ml Vegan Cruelty free Astonish Mould Stain Remover - 750ml This powerful Mould Stain formula with extra strength blasts away tough mould and mildew stains in minutes with no so scrubbing whatsoever. The active formula helps prevent the return of any mould or mildew, giving you a long lasting cleaning solution! Ideal to use on walls, uPVC window frames, glass, plastic shower curtains, bathroom tiles, grout, silicone sealant, concrete, sinks and plug-holes.