Box Elder bugs.

5919  We live at Lighthouse Cove, Ontario near the mouth of the Thames River on Lake St. Clair.  These flying insects seem attracted to our house. We have a white stucco exterior and during a sunny day, our house will be covered in them.  They are now making their way into our house. The attached photo is one that I caught today. It is ¾ inches long.  We’d appreciate your help in identifying these insects so that we can put measures in place to eradicate them.  Thank you.  Darrell 

This is a box elder bug.  They are common in your area as they seek shelter in the fall to hibernate over the winter.  They can be a nuisance but are harmless.
Read more about box elder bugs.