Originally Posted by
GrifTheGreat
Nightcrawlers are fine as a staple, but Hornworms can be expensive and grow so rapidly that the frog may not be able to eat them all before they reach their maximum size of four inches. You can slow their growth by cooling them down, but it can cause the caterpillar's food to become wet and possibly mold.
Hornworms do make a good treat.
Look at greatlakeshornworm.com. They usually have decent deals on cups for feeding multiple frogs, but you will need to let them grow for a few days to reach appropriate size for her frog and then try to slow their growth at that size or you may not get your money's worth out of them. They reach four inches in a week and a half to two weeks depending on temperature.
Best Regards
Grif