Cleaning copal can make all the difference when it comes to its smell and longevity. The best way to clean it is to first gently brush off any dirt or debris with a soft bristled brush. Next, you'll want to waft smoke from a smoldering stick of incense over the copal, which will help give it a fresh scent while also cleaning and purifying it. This process will have your copal smelling like a dream in no time - just remember that like a fine wine, sometimes you have to wait for the best results!