I am assuming that you are speaking of disinfecting a reptiles enclosure, and not an amphibians. For large enclosures that cannot be taken to the sink and rinsed out thoroughly, I cannot think of any other practical way of cleaning them. I also have a few enclosures like this and which we spray it down, scrub and let it sit, then we wipe dry with a towel. I have not had any skin problems with any of the animals I have kept in these enclosures. But if you start to see problems then you should change your cleaning practices to rule out irritations from Nolvasan.
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...the oldest task in human history: to live on a piece of land without spoiling it."
Aldo Leopold (1938)
"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."
Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)