This stuff works! It works on taking out the smell of poop, pee, grease from a shop and many more smells. We don't need to add anything else but this and laundry detergent. You just put it in the machine where the bleach goes. It is great, because if you have items that are not white and you don't want to or cannot use bleach, this works amazing to get it clean and it smells wonderful! One of my husbands co-workers at his job asked him what he was using on their work uniforms for all of the grease smells and he told them about this stuff. Even strangers are noticing how well this stuff gets your clothes clean!