These bugs are all over my workshop/shed. They have red eyes and fly. There are literally thousands of them. They mass in giant clumps. What are they, I’ve never seen them before.
You have an infestation of Box Elder Bugs (Leptocoris trivittatus). Check out our website www.whatsthatbug.com for more information. We have additional information on the massing bugs which we have listed under ladybugs because a recent question involved both species.