Wood mites are harmless. You can bake substrate/wood in the oven to kill mites and eggs if you're really worried. But you probably don't have to sorry about it.
You can use reptile mite killer like Provent-a-mite or Nix Lice killer to treat bedding, decorations, and plants. (not the animals themselves).
Reptile mites don't pop out of nowhere. They're carried or transferred by something. Even you can carry it on yourself when you go to shows or pet stores. But reptile mites won't live long without a reptile host.
Just pretreat all new additions for mites in quarantine. And you most likely won't get mites.
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