Hello. In Crystal Mn we have what appears to be small wasps nesting under our home siding. I managed to vacuum/kill about 300 at their entrance in less than 90 minutes, but they're still coming in. Can you please identify the species for us so we can know what we're dealing with? I've attached 2 photos. They haven't been at all aggressive--so far. If they're going to die out in the winter anyway then we'll ignore it, otherwise we'd like to get rid of the little monsters. Exactly where they're nesting is a mystery to us, we think they've found a cavity under the siding. Any useful info you can provide would be appreciated. Thanks.