We had a similar problem a couple of years ago. A bee keeper came out with his white helmeted suit and sprayed the bees down with sugar water. (said it got the bees drunk)
It took him about ten minutes to find the huge hive. The bees had taken over an entire insulated wall of our neigbor's garage. He sprayed more sugary water on them all, then proceded to cut out the hive an moved it along with all the honey to his truck.
He said in the end, there were more than 50,000 bees in the hive. He was going to sell all the bees to farmers for polination of their crops. The guy got paid three times. Paid to remove the bees, paid to sell the honey, and paid by the farmers for use in their farming.
HAHAHAHAHAHAHAHAHAHAHAHAHAHAHHAHAHAHAHA!!!!!!!