I have had two calls this week about bees entering between the top of bricks and bottom of siding on their house. Both seem to be between the first and second floor of house. Bees are entering along a 3 foot section of wall so not sure where main entrance is.

My questions are how do I find them and do you think they are in the wall (which I am sure has insulation) or between the first and second floor?
Also would you remove them from the outside or from the inside?

Thanks ahead of time for any suggestions.