One of the most asked questions I get is how do you clean a plastic bong or pipe? My usual advice is to throw away the piece and buy glass. The fact is that there are some people not in a position to have glass. I do not own any acrylic and don’t know how to answer this question. I do know not to use alcohol with plastic. I am puting the question out there and hope you can help. Leave a comment if you have a tip or some solid advice n how to clean a plastic/acrylic pipe or bong.