I agree I don't want any bugs living with my snake. I was just asking if they are harmless.

If I bake the substrate will they return? I mean if they are some type of wood bearing bug will they return if the humidity or something spikes?

I noticed ZooMed Repti-Bark is the ONLY bark that IS NOT heat treated before its sold. I was wondering what that mean't the other day at the Local Pet Store. Obviously it said heat treated substrate won't house mites.