We have a 6 year old female whole house free roaming iguana. She has never liked to be sprayed with a spray bottle to stay hydrated. I found a small bottle with a mister tip and built-in pump from Wal-Mart for $8. It works great! Iggi no longer minds getting misted by the mister, because the droplets are so fine. We also use it to mist her when she is outside, and gets too hot. I found a device at Pet Smart called "Mist'r Lizard" that has the same tip, but larger capacity, for $10.
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Lamar, Debbie, Nathaniel and Iggi :>~