so you sent thousands of these spiders scurrying around from your shed, of which they'll look for another shelter nearby...most likely your house?
I would have called John Goodman. And wouldn't open the cereal box...or put on shoes without first shaking them out.
I have a set of old horseshoes that haven't been used in years. They were tucked away in a corner that had, what I thought was, old cobwebs. I opened the bag up and the little fawkers started pouring out. I freaked out and threw the bag like a girl as soon as I saw them. I threw them three feet from the corner of the house. Which is where my office is located.
I stomped as many as I could and sprayed the rest. My house is set three feet above ground and I'm certain a few made their escape under there. Last night I was looking at pron after a few beers and a fly landed on my leg. It wasn't a pretty scene.