To clean a pipe cleaner, lightly moisten it with a small amount of isopropyl or denatured alcohol. There's no need to soak it; just a drop or two is enough to help remove residues without damaging the pipe cleaner or the pipe.
How much alcohol should be applied to a pipe cleaner? Deep dive
When using alcohol to clean a pipe cleaner, it is important not to use too much. One or two drops of isopropyl or denatured alcohol suffice to dampen the pipe cleaner and effectively remove tobacco and tar residues. The alcohol helps dissolve impurities without compromising the structure of the pipe cleaner or the pipe itself. Avoid soaking the pipe cleaner excessively to prevent moisture residues that could cause unpleasant odors or damage the wood or other materials of the pipe. After using the alcohol-moistened pipe cleaner, it is advisable to let it dry completely before reuse. This simple and controlled method ensures effective cleaning while preserving the longevity of pipe accessories.