I don't mist, spray, dome or anything. I have a home-made cloner tent I put under my breakfast bar that is essentially a little tent with two 23w CFLs in it, with just my cloner. It experiences significant heat/cooling changes (as it is in direct contact with cold air when I open my door here in Calgary and go for a smoke on my balcony).
There's no magic... I just put my clippings in, ensure there's always enough water in it, and watch the clones root.
I sometimes have clones that have dried/dead leaves, but after they are planted, they are irrelevant. Oftentimes I just bury the dead leaves into the soil. Other times, my clones are so short I can't do that, so I just let the new growth take over.
-spek