I got this about a week ago: for Jigsaw's cage and soaked it in water to help with the humidity. It worked really well and kept the humidity steadily between 20 and 40% if I spritzed it every day. Today when I went to change the water I noticed it had mold on it! Obviously I took it out and tossed it. Does anyone know if the sphagnum moss will mold as well? His moist hide is moss and I am wondering how often I need to change it instead of just spritzing it.