Cleaning

[Kurt]

They cannot digest gravel/sand/pebbles so it often gets stuck in their guts. That causes the impaction and when feces can't move along which then lead to septicemia and death.

I have had many of my frogs accidently digest sphagnum moss, with no problem.

[John]

I'm going to contradict Kurt's advice in one respect - sand, if non toxic (pool filter sand and children's play sand are fine) is not harmful and passes straight through the body. In fact for some species it is very good (desert amphibians for example).

[into]

I thought I read somewhere that Fowler's Toads can sometimes be found burrowed down in beach sand.

[Kurt]

John, I am assuming you are talking about very fine sand.

[John]

And I assume when you say sand you mean grit.

[Kurt]

Yeah, a fine sand, almost powder.

[John]

Grit is very coarse sand.

[StephenLS]

I'll second that. I've never had any problems keeping desert dwellers on sand!

It's called silver sand in England and is sold for sandpits!

[Kurt]

I wouldn't use anything that's coarse. I definitely don't trust it.