Not sure what Dillies are; local Walmart sells large (4 in. shrunk) Night Crawlers. Worms can be larger; that eye scale is for crickets and other insects with exoskeleton. As an example, Fresita my Pacman ate 2 in. worms when she was 2 in. SVL. They just wrestle them down and chomp on them until eaten whole worm. If cutting them, do so from pointy end and worm will heal.

You can rinse them in spring or dechlorinated water before feeding. Also, can pat them down in paper towel and dust them as needed (I only dust one per feeding).

Red Wigglers can produce a nasty tasting slime and some frogs do not eat them because of it. Bad thing is; after been slimmed, many frogs refuse all worms. Hope this helps and good luck !