It is effective in removing yellow and dark coloured stains formed by iron, copper and other metals on textile and other surfaces, which cannot be removed with normal cleaners. However, on coloured and delicate textiles, a preliminary test should be made on an invisible part of the fabric. It can be used safely on carpets and upholstery, stone, PVC, linoleum and similar hard floors as well as on laundry and washable textiles.