Krud Kutter Mold & Mildew Stain Remover is tough on stains from mold and mildew without using bleach or other harsh chemicals. This bleach-free formula dissolves stains from mold and mildew and forms an invisible shield that protects against stains in the future. Tough on stains from mold & mildew. Bleach-free. Leaves behind an invisible shield to prevent the return of stains. Fresh floral fragrance.