Great advice, friendly people, and lots of frogs!
Finished Metal mesh example
Has this one got a box inside a box? If so. for what purpose?
It does. There are young toadlets in there - the big box was too big - they were lost in it and so was the food, so I put them in the smaller box inside the big one (no lid on the smaller box). This way I can use the metal mesh lid of the big box to hold the light fixture that provides the light/heat for them.
I didn't think toads required lighting or heating, shows how much I know!
These are Sonoran Desert Toads.