I have two chams, one 5 months still in a baby setup and one 10 months in a 2x2x4. The larger enclosure has a live schefflera and other fake vines and leaves. Just recently started noticing some gnats in the enclosure and mostly around the gravel which is covering the soil of the schefflera. Any suggestions on how to treat this nuissance safely and effectively would be appreciated. thanks again for the help.