Just throwing this out there in case new keepers happen to be reading this... You REALLY shouldn't let your frogs outside. Even if you don't put any pesticides or chemicals on your lawn, anything that washes in with rainwater from somewhere else could be on there. That would just stress them out. They spend their days in the wild buried up to their eyes so that they can avoid the exact situation you're putting them in (out in the bright sun with no cover).