This brush may not be suitable for everyone. If you don't have a Dyson, this may not be for you. But if you have a Dyson vacuum, and particularly a model that uses this brush, you should buy one when your old brush wears out or has been eaten by your dog, your child, or both. I know it's hard to get excited about replacing a vacuum part, but we're in the middle of the COVID pandemic and you need to find joy where you can.