Randys is well known for their glass cleaners and pipe cleaners. This black label glass cleaner will get even the dirtiest bongs clean in minutes. Randys black label cleaning solution cleans resin and the toughest dirtiest bongs. Just dump a little bit into your bong, plug up the holes and shake, after a few minutes your bong is looking like new. Rinse out the bong with fresh water and you're good to go!