Since no one has answered you I'll give it a shot. I've had bee problems almost every year. The spray products available at any hardware store have worked well. They spray a thin line of foam for at least 15 feet allowing you to be far away from the bees when you spray. If your roof is 12 feet up the spray foam will reach it easily. Hopefully you'll be able to stand back some so the foam doesn't drip down on you. Saturate the hive or area that they are entering in. The bees will drag the foam in and out and it should send them all to bee heaven.
Hope this helps some.
|