I have a row of garlic planted next to my garage and 2 years ago I was digging up my garlic and came too close to a bumble bee's nest that must have been under the foundation of my garage. I had long pants on and got stung right through the pants. After they sting you I was told they send out a warning signal to the rest of the hive. Next thing I knew I had 3 or 4 buzzing me. Got stung a second time and then I ran for the house. I had to go out after dark and spray where they were going under the garage. I didn't want to deal with being attacked every time I went to the garden.