I haven't used a mistking.. I built my system using a garden sprayer. But, to answer your question, the chameleon moves if it doesn't want to be sprayed. My system has 2 sprinkler heads in the cage, and if he wants out from under them, he just.. walks away from them. However, that rarely happens. My panther LOVES to be sprayed. He sits in the mist, and usually travels between the two sprinkler heads.. sits under one for a minute, walks to the other, sits in it. I mist the pygmy enclosures by hand, and usually give him a good spray too. A lot of chameleons don't like to be sprayed directly.. mine is quite happy with it. He gulps water, cleans his eyes, poops.. etc.