Small brown bees
We just had a swarm of small brown bees come on the porch and try to take some dog hair off the porch. We have never seen these kind before. What are they and what to do about them?
Douglas County Colorado
Without a picture, it's hard to figure out what you have. Here's a Fact Sheet on bees http://extension.colostate.edu/topic-areas/insects/nuisance-wasps-and-bees-5-525/
also, check the Orkin site