Advertisement Twice now I've noticed both my O. ornatus and my Florida ivory exploring their tanks and poking around the walls, leaving little clear wet spots on the glass. The moisture is coming from their mouths in every instance, and each time I notice it they haven't recently been moved or jostled and seem otherwise calm so it doesn't seem like it would be a defensive behavior. None of my millipedes have yet to release any defensive secretions on me while I've been handling them, so I could be totally wrong because I've never seen it happen. Does anyone know they have any sort of response to excess moisture? I know conditions had been way too wet with not enough ventilation in my O. ornatus' previous tank when I first noticed the behavior, but her new tank is much more ventilated and not anywhere near as wet. The sub is pretty dry on the top 1-2in under the oak leaves but the bottom 4in is a bit moist, and I've never caught her burrowed, she's always on the surface. I mist one edge of the tank daily to keep humidity up and just have a screen top lid.