I'm been thinking about buying some smaller worms. They may be able to eat smaller ones easier. As the more you bug a worm the more slimy it gets. Cutting them up makes a lot of slime too. But I've only used night crawlers. I wonder if different worms will produce less slime. I would cut the worms up and the toads would all be sitting around the dish flicking their tongues like crazy and all it achieved was a bowl full of worm slime.
I washed mine off before offering them because I didn't want them to eat all the dirt. So washing the worm won't hurt.
My toads have never been able to eat worms. But my newts like them. I just had to cut them up super tiny which was pretty gross lol.
I've been thinking about trying silkworms. I've heard that toads like them and I've seen videos of toads eating them.