Mine are controled by a temp/humidity control unit called the Hygrotherm. Its made by Zoo Med. It turns my foggers on when the humidity drops in my tanks and turns them off when it reaches the % I set if for. I recomend anyone who wishes to use a fogger as a main source of humisity for their tanks. You can't leave the fogger on its lowest setting. Even at this low rate the fog will begin to condenceon the glass and whatever furnature you have for your frog and the water will run down into the substrate and cause water buildup. Plus you don't wan the humidity of your tank to reach 100% you only want a max of 80%. I wish it was that easy but it isn't. Research the Hygrotherm. They are a little pricey but are worth it.![]()