The addition of ethanol, which is fully miscible in water yet, less polar than Water reduces its solubility. This reduction of solubility results in precipitation of least soluble salts first or the salt which is not soluble in solvents less polar than water.
Pole pockets on banners are something that can cause a bit of confusion. This is compounded by the fact that some companies do things differently when producing banners with pole pockets.
a long, cylindrical, often slender piece of wood, metal, etc.: a telephone pole; a fishing pole. 2. Northeastern U.S. a long, tapering piece of wood or other material that extends from the front axle of a vehicle between the animals drawing it. 3. Nautical. a light spar. that part of a mast between the uppermost standing rigging and the truck.