I hate having to kill off bumblebees but sometimes you just can't avoid it.
A chipmunk dug a small hidey hole right at the corner of my front porch concrete steps and lately a small colony of bumblebees took it over. I normally would leave them undisturbed but it's in a place where grandkids and other visitors might be stung.
So yesterday I assassinated the queen and her consorts with wasp killer.
Today i got a bunch of limestone screenings and packed the hole full of gravel.
I really hate having to kill off such an interesting and useful bug but there was no other alternative.