In article ,
Spider wrote:

Read that helpful link from David Hill again, especially the 4th
paragraph/question-and-answer. Your neighbours need to repoint the
south face of their house (and perhaps the west, too, since that will
also be warm and inviting) so that the bees go elsewhere for soft
mortar. It is the only way to discourage the bees.

They're tenants.


Regards,
Nick Maclaren.