This is a 12mm glass bowl replacement for Waxmaid ash catcher & ash catcher mini. How to clean glass bowl replacement for Waxmaid Ash Catcher? 1. Put the glass bowl into a storage bag. 2. Pour the alcohol of 70% concentration or higher in the storage bag, together with some coarser salt. 3. Shake up the storage bag until the water changed to a dirty brown. Why Purchase on Waxmaid Official Website? Zero-risk happy shopping on Waxmaid official website, any unsatisfied products you received from our website, we provide hassle-free return or product exchange, fast respond pre-sales and after-sales customer service, 100% satisfaction.