I've got a few days in this circumstance, actually. That's why I'm doing this.Moss won’t dry, it just absorbes. Moisture is still in the enclosure.
Prep your enclosures well ahead of time, if possible. You can then see if your mix is supporting mould or other nasties before introducing the spider.
All I can think now is this:Just dont put it in a pan outside in the sun..I left a pile for one day in south Texas on my patio, and mites infested it. Oven works well. Never tried newspaper.