They could be caught with a butterfly net, magic butterfly net, sacred clay butterfly net, or volatile clay butterfly net. In Puro-Puro, a net and empty jars are required to catch any implings. In Gielinor, they can also be caught barehanded or while wielding any item, with or without an empty impling jar. Without an empty jar player will immediately receive the loot from the impling, instead of the impling itself.