There is disclosed a toothpaste comprising as an abrasive an alumina in the form of particles having d10 below 3. The scale inhibitor is aloe gel dissolved in water at a concentration of between about 5 and about 50% wtwt, which includes polysaccharides having a hydrocarbon chain structure having carboxyl and alcohol functional groups that interact with divalent ions. A carrier mount having a frame attachment device and a vehicle attachment device is provided for securing the U-shaped frame to a vehicle.