Every car owner should have one. When I purchased my new Audi - I drove straight to my local Walmart buy one....and it was SOLD OUT! For $10.86/ea they are always on back order. Save water and money...use this brush. After owning 5 BMWs numerous Porsches, and now my new Audi allroad Sport Crossover - this "mop" conceals the fact I am a cheapskate who is meticulous about clean rides.