Terrible advise by pet store!!! Frogs and toads do not eat plant matter (after they have transformed from tadpoles). The need to feed frogs and toads is rarely so desperate that they can't wait a day or two... As an alternative, I buy bugs over the internet. If you have reasonable mail service, just order some bugs (crickets, Dubia, etc.) in advance of when you need them. For baby toads, I really like little bitty Dubia nymphs (which you can buy cheap from Aaron Pauling). These are very tough little critters - feed them some cricket gut-load (I use Repashy gut-load) and fresh veggies and they will live for years. They survive heat, cold and mistreatment in shipping very well. Slow shipping to rural addresses shouldn't be a problem. Other bugs are generally less tough but it just depends on your mail service...