I bought my ball pytho from petco, and when i was picking out my snake i was talking to the guy and he was telling me what i needed for my snake and what i didnt need, and i specifically asked him do i need a humidity gauge and he said no its not necersary. And just a couple of days ago a couple of guys on here said i need one, but i havent gotten it yet and because PETCO doesnt no what there talking about my Ball python had a bad shed wicked dissapointing concidering its my snake first shed with me and my first snake