Wolf spiders! YUCK! A few years back we were putting an addition on the house and we had a brief period where we had the outside wall torn off and we were finishing closing in the tie-in. During this time the spiders were able to make it from under the crawl space up into the house. You would not believe the number of those things that came in. Every night when I would sit in the living room watching TV I could see them going across the dimly lit kitchen floor...and this is probably 30 feet away.

So I would sit with the fly swatter and make periodic rounds to the kitchen. I would guess I was eliminating more than a dozen every night. And this went on for better than a week!
My wife still laughs at the sight she had the one time when I was trying to make it down to the barn which sits in a field where I only mowed occasionally. This particular time was late summer when the black and yellow garden spiders were out in huge numbers. Well the weeds were high enough in places that they would form webs everywhere. When she looked out all she saw was me doing some sort of dance as she described it as I was stepping over webs and swatting and smashing spiders left and right with a couple of stub 2x4's.

I was not enjoying it at the time but I am sure it was good comical relief for her.

Needless to say that area gets mowed pretty well anymore.
