Offered by my husband for Christmas, and super happy with this gift, the use is simple and effective (with 2 cats). Unfortunately, after 2 months of use 3 times a week on tiles, a problem with the left wheel. Seen with Amazon for an exchange, ultra fast also thank you, but the same problem reappeared after two months is therefore requested reimbursement. Too bad because this device is efficient for hard floors and pet hair. By cons, one thousand thank you to Amazon for their responsiveness and business sense.