Due to living in a very rural area, I am faced with largeamounts of gravel on the vehicle floors. After vacuuming there are alwaysgreat quantities of sand still left deep within the carpet. At present I vacuum (6 HP) thecarpet numerous times using both a brush (agitate carpet) and rubber mallet. Onmost vehicles I easily spend at least ½ hour just doing the driver’s side. Ihave also used Metro’s air attachment with only a slight improvement. Anysuggestions to make the process more effective would be greatly appreciated.