bumblebee walking toads in refrigerator?

[SethD]

You have to do air trancefers everyday so they get fresh air and check on them constantly to make sure they are not dried out or losing weight

Actually no you don't. They don't need much air anyway as their metabolism is slowed significantly. Your not leaving them in that terribly long either. Longer periods used for other types of toads require more care and attention to conditions but a week or so for melanophryniscus is no big deal.