One of the things I find challenging with top bar hives is getting the bees to move from between bars when I want to push them together. I hate squishing bees. I've been sort of bouncing the bar up and down a little, but as the combs get bigger and more populated with bees, this doesn't work as well, actually getting them upset, worsening the situation. I've seen someone on youtube spray some water, some use smoke etc. Basically, I'm looking for ideas. How do you move them?