Make sure the vials are alive. It has been my experience that most Petco's don't remove dead cultures from their shelves. I saw one Petco actually mark them down.

Coconut husk/ground shell is fine. I am of European heritage, I have eaten coconuts, love pina coladas. Coconuts are not native to Europe and neither a lot of other things I eat. So that whole argument that someting may be bad since it's foreign to leopard frogs, doesn't hold too much water to me.

The forest printouts should be fine as long as they are taped to the out side of the tank. Be careul not to get them wet if you printed them with your computer, the ink will run and it will look like C**p.