This brush can't even perform the simple task for which it's designed. How can it screw up something so straightforward?1) It sheds bristles like a nervous Labrador. Now I need another brush to clean out the bristles left behind by this brush.2) The bristles are too soft, so they just kind of languorously spread the grounds around.3) It's even harder to clean this brush than to clean with this brush.If anything good came out of me buying this brush, it is to save you from making the same mistake.