So isn't a crawl space story but it is almost as good. I had to go repair a city well water pump motor. There was a small pump house out near a swamp which fed water to about 100 houses. The pump wasn't working and the people were counting on me to get the pump running again. I get there, unlock the door open it up and look inside. It was dark, damp with 1 light bulb working. I shine my flashlight into the area and see the service panel on the opposite end of where I enter the building. Then I look at the wall. It looked weird, the wall seemed to be moving. It was covered with those cave crickets. I tried to walk slowly past them to get to the service panel, but to no luck. They all start to move and jump. They were all over me, in my shirt, down my pants, etc. I run out of the building and drop pants to get the critters out. Luckily I am out in a swamp with no one around. Now I had to get the pump working , so I try again. I spray room with bee spray, use duct tape to close up every opening you could think of, shirt sleeves, pant cuffs, waist, etc. Put on a big hat and scarf cloth ( This was summer too). I head in the building. They are jumping all around the place, bouncing off me and my equipment, etc. I finally get everything working and get the heck out of there, as soon as I could. Went home for a nice hot shower!