Used in wet extraction rug cleaning machine for strong odor locked in carpeting in church nursery ~ worked well (odor actually GONE!) I expect the odor will return in a few weeks because the source of the odor is still there (diaper pail) but it did get rid of it for now! We've tried several other kinds of odor removers and this is the only one that worked. Plus its safe for children to crawl around on carpeting afterwards! I've already recommended to other churches with similar issues.