I assume that's what they are called. Big as bumble bees. Swarming big time here, not around the house but in the outdoor kitchen. They are even chasing off the humming birds around the feeders. Attempting to bore into the wood frame. I spray wasp/hornet killer all over the wood and kill several. Back they come in droves. Didn't see anything at Lowes or the feed store for them. Only do it during the day. If I can figure out where they're at night I'd do the damage on them as I do the shiners. Any ideas? Thanks.