I've heard many people on my old Swedish reptilian community (never setting my foot there again) stating that it would be save to bring in rocks and wood pieces from outside into the terrarium where you house your frog. Is this true or false? Another question I have is if I can feed my Horned frog with insect, fish found outside, if I'm sure they aren't poisonous or comes from dirty environments? I once feed my Pacman worms from outside (you know the regular fat ones living found in your lawn) then I heard they could eat your Pacman from the inside... A couple or question marks there, please enlighten me.

/Leonard