If you need to clean coins, start by running them under running warm water for 1-2 minutes. Next, submerge the coins in a solution of dish soap and water, then rub the coin gently with your thumb and forefinger to remove any dirt. If the coins are particularly dirty, you can soak them in soapy water for a few minutes, then brush them with a soft-bristled toothbrush. Dry each coin with a towel and store them in a dry place. If your coins are collectible, cleaning them may reduce their coin value, so check with a professional before cleaning them. If you want to learn how to store coins to keep them from getting dirty, keep reading this article!