Red Wrigglers for American Toads and Northern Leopard Frog?

[monster]

Im pretty sure they would be as healthy as a normal worm or nightcrawler, and the yellow stuff they secrete isn't bad for the frog it just doesn't taste good so it usually stops the frog from eating it. Most the time they eat them and once they get that bad taste they don't want to have anything to do with them or any other worm for that matter. But all in all they aren't bad for him so if your guy likes that bad taste then all the power to him, I would let him eat them.