This Clorox bleach stain remover for whites works great on solid whites or mostly whites, the precise application control of the pen allows you to easily target a stain on a pattern. This bleach stick removes tough stains like mold, mildew, coffee, tea, berry juice, red wine, and is great for cleaning caulking and grout in kitchens and bathrooms. Ideal for use in daycare centers, restaurants, cafeterias, hotels, office and other commercial facilities.