Hmmmm, cheering charms could do it! ThanksI know I said that they can't be killed, but maybe, as they breed in despair, you could feed it so much happiness that it exploded from joy and all the souls were released
I could change it so the ministry is experimenting on ways to get rid of them, since they don't control Azkaban anymore.
I have to agree! Incendio or lynx and a lighter? lolFlamethrowers. Everything is better with flamethrowers. That's the way to go.
Thanks for the link, it's really helpful