I find that covering the substrate in my fbt tank with moss helps prevent substrate from getting in the frogs water. The problem is that my local pet store only sells sphagnum moss, which poses impaction risk. would it be safe to collect and use wild moss? I know not to use moss with long fibers because of impaction risk, but are any species of short fibered moss toxic/likely to carry disease/unsafe? How do I make sure the moss doesn't bring any diseases or bugs into the vivarium?