There is. The troubles lie in thier possible Ghoul hoarding, teching and the fact they have towers. If you had siege, I did this once. I punched a hole behind thier base where thier gold mine is and launched Demolisher ammo at thier acols and thier Haunted Gold mine. The dumb part was, he tried to send him men thru the small tree hole. Which made it easy to bottle neck them and drench them in burning oil
