I just cleaned my Peterson Killarney 221 after about 2 months worth of smoking and my God does that make a difference. No bitterness or acidity. I just used some pipe cleaners and got rid of all the gunk that was in the pipe. Anybody else have any recommendation on how to keep my pipe clean... It's unfortunate that I'm an in debt uni student so I can't afford another pipe to keep in a rotation. Anyone have advice on how to clean and keep my pipe in working order? So that I don't damage the briar.. :|