I am being overrun by Boxelder bugs.  They keep appearing in my house, a few here, a few there, a few everywhere.  It's disgusting, but at least they aren't roaches or wasps I guess.

I bought some pest killer yesterday and went around the outside of the house, spraying by the doors and along the seams.  And there they were - several giant masses of the little guys, hundreds of them, huddling against the sun.  A couple sprays sent them flying this way and that, hopefully not into the house.  Now the masses are gone but little piles of dead bugs remain.

And yet more go crawling through the house.

Anyone know a good exterminator?