Are you talking about the ultrasonic fogger? If so, I have some suggestions for you. I works fairly well but I had to put it on top of the cage and then put a 12 inch high cardboard or plastic (rigid) that goes around the circumference of my cage on the top. This channels the fog to go into the cage. Otherwise most of the fog will roll of the sides of the cage. This seems to work well and my chameleon will get in the middle of the fog. It's much easier to breath in the fog than a heavy mist. Good luck