I've seen bait worms from Walmart before, and it seems that they were recommended a while back by someone on this forum. I'll double check the packaging to make sure that it's chemical free. I have some leftover dubia from my bearded dragon, although I'm not sure if the pacman frog likes it much...he bit into it, spit it out while still keeping it in his mouth, pulled it back into his mouth, etc. and repeated a few times before (hopefully) swallowing it. Normal? Stop feeding dubia?