The useful bottle cleaner of the glass collection Bottle Cleaner help to prevent sediments in carafes and decanters. Used correctly, the bottle cleaner can be reused indefinitely! Please note that these cleaning pearls cannot be used in some decanters, such as Horse and Black Tie Face to Face. Directions: Fill with plenty of water, carefully add the pellets and swirl the container for 1-2 minutes. Pour out carefully into a sieve and simply rinse the pellets with water.