bees make nests in inconvient places. i've been attacked, simply going to a car next to the one where the nest is.....and a car doesn't need to set more than a day or two, before those little effers are nested in there.
no thanks.......if there's a nest......carb cleaner to the rescue. 
that was a swarm, not a nest.
most people think bees are kinda useful if you like honey. they are much more important than that. if you like eating anything on
this list then you should be trying to keep em alive, not wipe em out. theres hardly any wild bees left, and the kept bees have been ravaged over the last few years.
All of my godmother's husband's hives were wiped out coupla years ago, same story all over europe (and the US iirc.)
trust me, I'm no eco-hippie but this stuff is worrying when food supply is already a problem. have you noticed how much the price of basic foods has gone up over the last decade or so? its not a blip, its a trend ...

edit: exception for the africanised bees. theres a lesson in them.