I just set up my whites tree frog enclosure.It's a xl exo-terra terrarium. In there i have an arrowhead plant, angels's tears, a club moss, and just recently a philodendron. I just read that they contain calcium oxalates and can be poisonious to herps. But are they only poisonous if ingested or is the toxin secreted on the leaf surface? i doubt the frog will chomp down on a leaf (since he's fed outside the cage) but i don't want him climbing on the leaves if they secrete toxin. Does anyone know about philodendrons?