So, I (well my snake techinically) am currently recovering from a bout of mites (used the Nix method, worked great), the cage currently only has paper towels as a substrate, his water bowl, and a tupperware hide box. When it comes time to add the substrate (aspen) and other cage items (a wooden hide and wooden climbing things), what is the best way to sterilize these things? I realize I can probably soak the furniture in a bleach solution, but what about the substrate? I've read you can microwave it, was just wondering what everyone here recommended. Thanks.