I got the Cypress Mulch from Home Depot, but that was 6 years ago. I can't find it anymore. I'm glad I bought 6 huge bags way back then. I was real glad when we moved him outside because I was running low on it. I would order my sphagnum moss from Amazon, it was green and for Galapagos tortoises I believe, it came in a small bag. Then I started buying it from Tortoise Supply. Both were great. I don't see people talking about the sphagnum moss anymore, but when I was just getting started it was mentioned a lot from the experts. I only used it in the hiding box inside his sealed enclosure. When we moved him outside into the shed we didn't put anything in there. We tried at first but he didn't use it at all. So why spend the money for it, correct? I would get little knats but Tom told someone not to worry about them. So I didn't. I would clean his chamber often, washing down the walls of it etc. That seemed to help with the knats. I mean, gross, the chamber was in my house. I was real lucky cuz my tort would poo in his water. EASY clean up. Every once in a while he would do it in his bowl. That's usually when I decided it was time to give the chamber a good clean anyways. I hope all this helps. I'm writing more than I ever have. When I was raising mine up, I would just sit and read what Tom, Yvonne and Mark would say. I never spoke out. I want you to have the best experience. I guess that's why I'm speaking up now.