Quote Originally Posted by anatess View Post
My snakes are younger (oldest is about 2 years old) so I do a full substrate change-over after every shed which comes out to be around once a month.
I agree. I also want to add. It depends on the frequency of eating/defecating. Young snakes tend to need changes more often. My breeder female boa, I will not need to change her substrate for the 2-3 months of her being cooled and breeding(non=feeding) mode.