Thanks for the compliment on the dragons. Yeah, I have quite few dragons running around here. 9 to be exact. I happen to really love these guys and put a LOT of time into keeping them well. For substrate I use a plastic non slip shelf liner. They sell it at like Walmart in rolls. I cut it to fit inside the enclosures. I have a pic on my link mystical dragons below you can take a look at the cages. I finally found a nice solid green color instead of that white in the pic. I like this because there is nothing to ingest and worry about, clean up is real easy and done daily at feeding time. I just take a spray bottle and paper towels and spot clean daily, and once a week I soak them and put a fresh one in so I can dry out the old ones. With sand when they poop on it and you clean it out there is always a smell and some that does get left behind. Then they have to live on that same sand daily and possibly ingest it. With the liner it's very sanitary, cheap, easy to clean, and safe for them. Like I said I have 9 and if you were blind and walked in my place you would not know I had animals. There is no smell, and the cages always look nice and clean with the liner. Some do use sand without problems. I just don't risk the problems at all. If you do keep the sand, the play sand at home depot would be a better choice. Cheap 5 bucks and it comes in huge 50 lb. bags. Just make sure they eat off of the sand. Since you use the freeze dried crix this should be easy, and just place the salad bowl on a paper towel just in case some does fall out. Some people make half sand, and split the cage with a piece of wood like a barrier and do the other half in a reptile carpet, or paper towels, or the cage liner so the dragon can dig if they wanted too.
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Mystical Dragons