It's effective in preventing hair tangling on the primary brush roll. There are many users mentioned that they are living three persons in a house with Golden retrievers, and they mostly have mixed flooring. As this Shark AZ1002 featured the tangle-free brush roller with self-cleaning technology, they said this floor head combination is ideal for any flooring type, capable of picking up long hair and pets' hair effectively. But, you must keep running the vacuum for a few seconds after completing every vacuuming session to release any hair that may have gotten wrapped.