What types of frogs do you have? Do they eat the beef well? Being the beef is not running around alive like crickets or other insects, you might be able to get them to eat dried crickets. I'm not sure if they are as nutritious as live ones though. But, dried crickets can be purchased. You might even be able to purchase frozen ones. And depending on the size and type of your frogs, I'm am sure you can purchase live chilled worms on the Internet. Is there anywhere to go fishing there that would sell worms or crickets as bait?