I have some young tree frogs who are currently eating fruit flies dusted with Repashy Calcium Plus. They're getting house flies and blow flies too but I've stuck with fruit flies as they're still fond of them and there's plenty of surface area so it's a good way to give them the supplement (bit hard to dust larger flies thoroughly.) Anyway, there's usually a bit of the supplement left in the bottom of the 'seasoning' container that I tip the fruit flies from into the tank. I do my best not to let any excess supplement go in but sometimes it happens anyway, and sometimes directly onto the frogs as they come out and sit near the place I'm tapping the flies into.

Basically, I want to know is if it's OK for the frogs to have incidental skin contact with a vitamin supplement? It's not huge amounts but I just wanted to know if this is something I should be worrying about