You need to hire a professional Bee Removal Company. I actually had this problem. A man came to my home. Suited up in protective gear. He first had to break through the wall. Then after killing the swarming "Live" Bees he then had to Remove The Hive. Which, by the way, was massive. There is always a hive. Once I got over the shock of the SIZE of this hive...the rest of this was really not a big deal to handle. Good Luck!