"worms are the best choice for my frogs"
Not at all..it's actually really fun and makes your frog trust you! Buy red wigglers from your local pet store or bait shop. They come in a container of dirt (MAKE SURE you keep the container in the fridge!)
When you are about to feed: pick your worm and then always rinse it off quickly, then just get your frogs attention by dangling the worm in the water and when you see that you have his attention drop it in right in front of him...after awhile they will just come up and grab it right from your hand easily. It's great to watch. They will consume the worm by using their "hands" to shove into their mouths and they look super cute with fat cheeks! Don't be alarmed if they spit it up and then re-swallow the worm a couple times. They aren't sick or choking it's just how they do it. I have a friend who works at the national zoo in Washington, DC and she told me that they feed their ACF's a diet of only worms. In my opinion, they are the best choice for my 2 frogs.
(I go with red wigglers because my boys are still small, but if you have adult frogs you can definitely use earth worms if you'd like!
You really should try it and let me know how it goes. A whole tub with a bunch of them in it are literally 3 bux! When kept in the fridge, my worms always last by staying alive until the frogs have eaten them all up!