Possible bumblebee nest next to house

Possible bumblebee nest next to house

Hopefully related enough to gardening to warrant posting this question here. :) I'm unsure what to do. I've noticed bumblebees behind our deckbox on the patio and I think they've built a nest in a space somewhere around the wall of the house or maybe found a crack between the patio and the house and built a nest under the patio. I just know I've seen multiple bumblebees landing behind the deck box and I've watched them then crawl into a space beside the patio slab. We've had bumblebees for years at our house, I've usually seen them crawling out of the ground in the front yard. I've ignored them because I think they're nice to have around and they don't bother us - they're just interested in all the flowers, especially the liatris when it blooms in the front yard. I've even accidentally jostled a few off the liatris in the past when I was doing some weeding, and they just buzzed off to another stalk of flowers somewhere else in the garden bed. But this nest bothers me a bit. We spend a lot of time in the backyard now and on the patio. We have a cushion on the deckbox and our 4-year-old son likes to lay and sit on that deckbox. He peeks behind to see the bumblebees, but knows to leave them alone. However I'm still afraid if they sense we're watching them or getting too close (which has and will continue to happen since we're on the patio so much) that they'll think they need to defend themselves. Give the problem with declining bee populations, I hate to think of getting rid of a colony of bumblebees even tho they haven't bothered us yet. I don't know if bumblebees are the same kind of pollinators as "regular" bees, but I still hate the thought of killing or outsting a bunch of bumblebees right now. Any thoughts on whether I let the bees "be" or should I take proactive steps to get rid of this particular nest?
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