We had a very expensive vacuum (won't mention the name) but has been a household door-to-door item for a long time! My daughter had bought the shark & after hearing her testimonial I thought I would get one also! I was shocked & rather disturbed at the same time. We vacuumed our carpet twice with our other vacuum & then we all watched as she re-vacuumed the same area. Here is the disturbing part, the excess of dirt and pet hair almost filled the canister!! Our carpet is one yr. old & vacuumed on a daily basis & this is why I was shocked! Superb vacuum , cheapest price I could find was offered by Wayfair & delivered within two days!! Love it & Wayfair !