I started beekeeping this year. I didn't have problems keeping the grass cut around the hives in the beginning. I would mow early (7AM) and the bees didn't mind it. However, I now have difficulty cutting the grass with the now established hives. I am aware you shouldn't hit the hive with the mower. Does the sound, vibration or smell of the gasoline lawnmower cause them to become angry? What is the best time and method to cut the grass around hives?