I've recently, as in a few months ago, been converted from cotton ball/alcohol to soap, a tube brush, and running water. My first experiment was with an estate Stanwell that was such a disappointment that I was willing to ruin it to find out if soap and running water would work better than two cotton ball/alcohol treatments. That truly foul tasting pipe is now my favorite smoker. I've since done it to a handful of other pipes, a couple of them being my favorite, most coveted pipes. The only downside was having to re-wax them. I started with baby shampoo that I use on wools and delicate clothing, and then have since moved to Bacti-Stat AE that someone gifted me. I know. I know. I wouldn't have believed it safe or recommended until I tried it for myself. I've spent most of my smoking life babying my pipes. I've been wrong all along.