Answered my own question, approximately once a month from what I read. Which brings me to my next question... I've had my corn snake for 3 months now. During this time she has only shed once, and that was nearly 2 months ago... Should I be concerned? I mist the substrate once daily sometimes twice, and monitor the humidity regularly. She has looked a little dull lately, could this be related to her reguege yesterday? Should I purchase some moss or something to aid the shedding process?