Yes, cleaning the Puffco Peak Pro Replacement Glass with 91% isopropyl alcohol is a highly effective and recommended method. The high alcohol content ensures the thorough removal of any residue or buildup that may occur during your vaping sessions. To clean the glass, disassemble and submerge the components in the alcohol. Gently agitate the glass to help dislodge any stubborn residue. After soaking, thoroughly rinse the glass under warm water to remove any remaining alcohol. Allow the components to dry completely before reassembling your Puffco Peak Pro. This simple and efficient cleaning method helps maintain the purity of your vaping experience and ensures that your replacement glass remains in optimal condition.