And another question, I have a jacksons chameleon and how often and what times should I let my mistking automatic mister go off ?
Rephrasing what
Mendez said, it depends on your ambient conditions; there is no "X times per day/night for Y minutes" formula. Like basking lights, finding what works will be a matter of trial & error.
That said, dawn & dusk (lights on & off) are times many/most start with because they're easy to remember & arrange, and coincide with common rainforest patterns.
My mister goes off 5 times throughout the night for short intervals. If you have a mistking, short periodic mistings can never hurt throughout the night to keep the humidity up.
Likewise, my mister goes off 5 times throughout the night—at 6pm (dusk), 9pm, midnight, 3am, and 6am (dawn). It also goes off at noon for a mid-day sprinkle.
All durations are 2 min. because that's how long it takes to wet everything down without too much waste running down the drain. The 6 hr. daytime interval also allows for complete dry-out between mistings.
That said, some may need to mist more often for dryer/warmer conditions, or less often for more humid/cooler conditions. Durations may also vary based on the same conditions, how much foliage you have, size of enclosure, and other variables.
It's not so much the method as doing whatever it takes to achieve the desired results.