Leopards are one of the CLEANEST herps you can get if you let them- sand is messy, go with reptile carpet or the hardware store equivalent. I promise, solid substrate is so much easier with these guys. Carpet allows me to place a paper towel in the corner of the enclosure where they poop, and it basically serves as a litterbox and is easily replaced when soiled. Hell, I haven't had to strip down and sanitize that cage in months.