The Rainbow has been around since 1936. It uses water as a filter to trap dust, dirt, and filth as a vacuum. It does not leak filth into the air and never clogs to loose power, as others do. It's also a Certifide Air Cleaner & is listed "Ashtma & Alergy Friendly", by the Ashtma & Allergy Foundation of America. It's great for anyone that wants a Cleaner, Better, and Healthier way to clean. If you have pets, no problem, it's great for pet hair. The Rainbow is used on ALL types of surfaces and has attachments for every cleaning job. Not only does it do normal vacuuming, cleaning, & Air Cleaning, it sucks up water & liquids too, as well as shampooes.