I only have 12 snakes in my snake room but it can get smelly depending on substrate I found out. The room never smelled while I was using reptichip. I thought it was because I stayed on top of spot cleaning but when I switched to paper towels I could not control the smell. It literally smelled all the time. I only switched to the paper towels because a new snake I got had mites so I wanted to make sure they didn't have hiding spots and spread while I was treating. Man am I glad to be back to the reptichip, within a week smell is gone. I'm still amazed what a difference it makes, worth every penny!