Vampyre dust

Vampire dust is dropped by vampires and vampyres and is used for summoning vampire bats.

The best place to obtain vampire dust is by killing vampires east of the Abandoned Mine. When combat level is 105 or higher, Haunted Woods will become a good place to attack vampires too since leeches are non-aggressive at that point. Haunted Woods also has a bank nearby and also can be accessed with Fairy ring network. It is recommended to wear Holy symbol since it greatly weakens vampires.