The Tar Buster is one of the components of the Low Cough Kit.  It is a carbon charcoal filter that will filter out approximately 94% of tar, pesticides, and contaminants in smoke.  You should be able to get two sessions of usage out of each fill with new carbon charcoal.  We recommend unloading and cleaning the filter after each day of use.  If you use it often, keeping the filter clean will prevent any clogging during use.  See our section for helpful videos.