They like the house

Several years ago we went to a house in Manoa, HI. and removed bees.  We have been back to the house four times over the years.  The house is a pole house, built on stilts so there are many places for the bees to get in.  They also have A LOT of steps to get into the house.  We just finished another hive in a wall in the house.  I expect to get a call next year to remove more.