For cleaning the enclosure, the water need not be warm- just need a bit of soap in the water to drown mites. As far as mites on his head, I'm not sure (I've never used Natural Chemistry spray) but I think I've seen where it's even safe to use on the snake's head? ***Please double check that, though.*** It's not a pesticide, it kills mites by desiccation. You wouldn't want it in the snake's mouth or nostrils. https://www.amazon.com/DeFlea-Reptil.../dp/B0002QIII8