These D3 bagless vacuum cleaners have been around for many years. No filter bags to empty, when water is dirty you dump it out and replace with clean water. Looking for a allergy friendly Vacuum the Rainbow System Cleans with the Power of Water to Reduce Dust and Allergens. Includes rainbow vacuum motor, large and small water canister, 2 hoses, powerhead and variety of attachments. Plus 4 bonus fragences you can add to the water