I have been reading that fir bark can cause neurological issues in Tegus and other reptiles due to the oils in it.... but zoo Med makes a product called reptibark that is literally fir bark. Is this a safe product? I would find it hard to believe that zoo Med has a widely distributed product that is unsafe for the animals they make it for. I mix it with coconut husk (eco earth) for my tegu. Wondering if i need to switch it up.