First of all, don't go chasing poisonous frogs. It's not a good idea unless you're a trained professional, so don't do it. That said, if you're interested in seeing how the professionals actually do it, here is a very interesting video! Apparently a clear plastic bottle and a pair of gloves are the truly crucial ingredients.
Scientists say that it takes good listening skills as well. You drive around quietly, listening carefully for frogs. They also say that most poisonous frogs can't harm humans, but still, it's better to be safe than sorry! Finding the frogs is a skill in and of itself, but once you do, you have to be careful during collection as well.
Do you enjoy catching frogs where you live? Do you have a method? Share it in the chat!