No, frameshift, I haven't tried other methods. I am content to have read 30 plus years of other's attempts. As Micheal Bush said, he's tried many and always came back to smoke. He's not the first one I've read about, and I doubt will be the last. As he said above, most problems people have with smoke is, they use toooo much. I smoke lightly in the entrance of 4 or 5 hives, then a light fan of smoke over the top of each one as I open it. That's all that is needed 99% of the time