Yeah, it's a brick chimney. It wouldn't be worth pulling bricks out. I was hoping there might be some way to 'scare' them out and lure them into a hive. I've heard they don't like moth balls or bee-go, so was hoping to remove them with something like that.
It's not my chimney but they've been in there for a while and it's fairly bocked so I don't think smoke would go out very well plus I think all the wax would melt and make a huge mess.
I'll try the general discussion forum for info on trap outs but it sounds like it might be quite a challenge.
Thanks for all the advice!