Being fairly new to muzzle loading I havent heard of this but it worked for me. Friday I was shooting my .54 cal. Blueridge when it got pretty dirty. I was using 1 1/2 gr. Swiss. I ran a dry patch down the bore and the rod got stuck, really stuck. A guy I didnt know held the rifle but we couldnt pull the rod loose. I poured some solvent down the bore, waited about 5 minutes and it pulled right out. This probably isnt anything new but it might be helpful to some.