Unlike their other bat relatives, these bats are aggressive. Players using full Guthan's may use them as a means of healing. The bats will not show aggression to players whose combat level is 105 or greater.
They can be killed for 'bat' slayer assignments. They give the highest amount of Slayer experience for any bat, although there may be higher-levelled bats in Daemonheim which give more. If you want to slay these, it is recommended to bring a witchwood icon, as the Cave Horrors will frequently interrupt. A light source is also necessary to survive in some caves.