My neighbour came over yesterday to ask about bees in a tree near his property. I went and had a look, and yes, it looks like bees have made a hive on the inside of the tree. You can only see the bees going in and out of a small crack. Possibly where the tree has split, and is hollow on the inside. The bees are creating a bit of a problem, especially as his wife may be allergic to stings.
He would like to be rid of them, but I'm not sure how to go about it, or what to suggest.
Any help would be appreciated.