In my experience, their taste is fine for them, but I've experienced that my African common toads and Asian common toads don't like them and have never gone for anything worm-like that crawled.

My Bufo bufo, however, and Bufo japonicus, love them and go for anything crawler as well as wiggeley. So there may be a factor of what their normal prey-form is. There is also the factor of what they have mainly been fed: My African common toads were wild caught toads (a sympathy buy from an expo) and according to their seller they'd only been fed crickets in the 3-4 months he had kept them.

For the whole year and a half period I kept them, they refused to eat anything else than crickets.