Even though it is messy, I use Pops exclusively because no other rosin works as well. Maybe it's because I can get fresh Pops rosin and have never used any of the others when they are fresh. The freshness does really make a huge difference because old dried out Pops is just as unworkable as the Carlson's that I have tried. If that is the problem and there is somewhere I can get fresh Carlson's I'd be willing to give it another try, but, otherwise, just give me the Pops.