As I was shopping in the pet supply store the other day a lady asked if I put my substrate in the freezer before using it. I told her no, I hadn’t thought to do that and she proceeded to tell me how she didn’t until she found millipedes in her enclosure and was sure they came from the substrate and that I should just in case the substrate has mites in it. I need to run back to the store today to get some sphagnum moss (trying to get the humidity to maintain) but I’m wondering if I need to put it in the freezer first and for how long? Right now we have a layer of eco earth loose coconut fiber substrate and then mixed in a little bit of repti bark.