My last post didn't work...so here I try again. I only have a few ideas. I once had my water dishes on the ground of the unit, but that didn't work well. Once I put them on a shelf as close as possible to the oil heater, I am adding water every other day. I'm hoping that it's just helping with humidity. You could try the humid hide box. It should cost much to make. As mentioned, spraying helps tremendously.