Here's a tip on how to kill a ghost and get a pipe almost too clean it's scares me worse than actual ghosts
go buy some chlorine dioxide water treatment - place it in a heavy concentration to water ratio in a small cap or container
then take your pipe(s) and that solution and place in a lidded bucket, large ziplock plastic bag, or plastic tote(large tupperware)
cover and leave for like six hours - if all goes well your pipes will smell as putridly sterile as a dentists office
caveat here is I don't know if any of the chemical reactions(possible hydrogen and chlorine reacting with tar,carbon[acetylene] creates any toxic biproducts like vinyl chloride - so be careful - make sure to do a final rinse with everclear or water prior to smoking. This is basically an alternative to buying an ozone generator. you can also submerge the pipes in chlorine dioxide but why ruin your pipes
go buy some chlorine dioxide water treatment - place it in a heavy concentration to water ratio in a small cap or container
then take your pipe(s) and that solution and place in a lidded bucket, large ziplock plastic bag, or plastic tote(large tupperware)
cover and leave for like six hours - if all goes well your pipes will smell as putridly sterile as a dentists office
caveat here is I don't know if any of the chemical reactions(possible hydrogen and chlorine reacting with tar,carbon[acetylene] creates any toxic biproducts like vinyl chloride - so be careful - make sure to do a final rinse with everclear or water prior to smoking. This is basically an alternative to buying an ozone generator. you can also submerge the pipes in chlorine dioxide but why ruin your pipes