I was given a bag of two different types of substrates. One is T-Rex Jungle Bed- a mix of forest bed, coconut bark, calci-sand, and vermiculite. I use the coconut fiber that comes in bricks for my frog and toad, but I thought calci-sand and vermiculite were to be avoided for all animals. Is this correct, or would they be okay to use with my frogs? If not okay, what animals are they okay for? I also have a bag of that reptile bark stuff in small pieces. Who is that safe to use with? Just trying to figure out if I should keep this stuff laying around or just give it away.