I started using OxiClean when it was first available and it has never failed me. I do a lot of laundry for family, friends and guests and can only use products safe for sensitive skin (no scent or dye). I go through a 12.5 pound box every 4-5 weeks and I add it to every load of laundry. Thus far it's been safe on all washable fabrics and works well in all temps. For cold water washing, I find it works best to start filling the machine with a couple inches of warm water to quickly dissolve the powder first, then I add my detergent, switch to cold and add the clothes. For front loaders I mix OxiClean with two cups of hot water and add through the bleach dispenser. I have never found a stain that this product could not remove. Last weekend we had a house full of guests and a hot blueberry pie ended up on the floor. Someone ran to get cleanup rags and accidently grabbed my favorite white polo shirt. I followed the simple pre-soak instructions for extra tough stains and I'm wearing that shirt today. It really works.