Things You'll Need
Instructions
Place the coins on the bottom of the 4 by 6 plastic dish. Do not stack the coins on top of each other. Place as many coins as will fit on the bottom of the dish as long as they do not overlap each other.
Pour water on top of the coins. There should be 2 inches of water covering the coins.
Add 1/2 tsp. liquid dish soap to the water and let the coins soak for a day.
Take the coins out one at a time and gently scrub both sides with a soft head toothbrush.
Rinse the coin off and dry it with a microfiber cloth.