Hi Amy, thanks for taking an interest in helping out my frog!
I'm pretty sure that there isn't any fertilizer in the soil. I forgot to mention that the soil of the plant is also covered with several HUGE flat marbles (There's no way possible that they could eat them. The marbles were all washed thoroughly before put into the enclosure.) to keep them from being able to dig inside the soil, or eat it my silly lizard's case.
I think I answered a lot of those questions in my above post, but I'll look through them and answer the ones that I haven't.
Both frogs are american green tree frogs.
For cleaning I do a good scrub down with water once a week, sometimes it takes a bit longer. Between those big cleans I just spot clean.
Everyone in the enclosure usually eats every other day, and they usually end up eating about three crickets a piece. I hand feed everyone to make sure that they are all getting the food they need, but I will sometimes let an extra cricket or two hop around in the enclosure just in case they're still hungry.
The lizard and frogs have never been to the vet before, and have never taken any medication. I don't know of any vet in the area that would accept lizards and frogs, much less these little guys.
Thanks again everyone!