I recently went hunting for a broken horned oryx. I was dropped off at the box blind on the ground just before first light and as I opened the door in the back and stared into the pitch black of the inside of the stand, I thought...hmmmm, I should probably shine my flashlight in here and take a look around first, before I just go in and sit down. I took out my cell phone and hit the flashlight App and HOLY COW the box blind was infested with granddaddy long legs spiders! And I don't mean a dozen or two dozen, I mean hundreds and hundreds! They were EVERYWHERE!!! They were all over the door, completely covered one wall and most of the ceiling.
Now, I know what you're saying: They're harmless! Well, maybe so, but I wasn't about to go sit in a stand that was infested with hundreds of spiders crawling all over the place, harmless or not. I had to back out and change stands. I don't like spiders.
Moral of the story, bug bomb or spray your stands!