i did this a couple times already, with bongs and pipes. Id boil water with table salt added, then after it as boilded id dump it into the chamber and let it sit for abit, then you just take a old toothbrush, or something similar. Scrape the toothbtrush where the resin spots are the should slide off no problem. It left my bong looking like brandnew.Ill :bonghit::bonghit:have a pic uploaded.:bonghit: