They Sealed the Bees In With Spray Foam. It Didn't Work.
What happened on this job
The property owner tried to stop honey bees with spray foam. The colony simply built a huge hive behind the wall, full of brood, wax and old honey. Sealing an active entry never removes the hive.
Like every job, this was a live removal with no chemicals: the bees and all the comb came out, the colony went to a beekeeper, and the entry point was sealed so bees don't move back in.