These bees are going into a hole in my foundation about 2" from the ground. I have asbestos shingle, not siding. It seems there are entering my crawlspace which is around 36 in. high and runs the length of my home. I have insulation between the wood floor rafters, and they can possibly also get into wall space above, I'm not sure. I did have a big leak problem for awhile with a window 4 ft. above the hole, but that's been resolved. Someone not from this site said they thought it looked like a carpenter bee. However, I did find a very similar pic online that was called the Common Northeastern Bumble Bee. I know my pic isn't great, but I don't see a shiny backside, but looks like it may have a little hair? with definite pronounced ridges and the very large black dot. I first noticed one going in around mid May when I was bending by a bush right next to the hole and heard a loud buzzing over me. I shooed it and saw it enter the hole. I kept looking every day as its right next to my vegetable garden, and thought it was a fluke. But a week later I watched for awhile and they were there for sure. There are not a lot of bees going in and out. To take the picture, I had to stand there for minutes before one would go in or out. I was pretty close, and there is no hovering while I'm there and no bee keeping watch, unless they're doing so inside the crawlspace. I went under there one day to get some spare wood that I keep close to the bilco door entrance under there about 12 ft. away from the hole, and nothing came at me thankfully. They seem smaller than carpenter bees I usually see her on Long Island, but who knows, and that's the question. I hope someone can tell me definitely, for sure, if it's a carpenter bee or a bumble bee, as I know they closely resemble each other. If they are bumble bees, I think I can leave them alone until it gets cold and plug up the hole, but not if they are carpenter bees. I'm a 61 yr. old female on a very tight budget, and have to take care of this myself, and I'm afraid to go in the crawlspace now. I purchased some tempo dust I found online in case they are carpenter bees, but all I can do then is blow some on and in the entrance. Not sure if this will get the queen(s) or get to the nest, wherever it may be. I'm thinking it would be close to the entrance. I can't see them flying around in the dark down there and hope they can't make their way up into the attic from the walls. Thank you so much in advance for any info!