Just wondering how you guys store your substrate, especially ones that require water mixtures. The two substrates I'm considering getting are Reptibark and Reptichip.

Reptibark I'm sure you can just store/keep the portion you're not using in the bag. How would you store something like Reptichip? Would I just cut a portion of the brick I want used then store the rest of the brick dry?

For pretreating for mites I heard people either bake, freeze or/spray with prevent-a-mite. Seems straight forward with Reptibark or other dry substrates but at what stage do I treat water/damp based substrates like Reptichip? For example would I spray it with Prevent -a-mite after I've mixed it with water or after? And what about baking or freezing? Would I do that when it's dry/when it's a brick before mixing it with water?