Eight in the box. They're pretty one dimensional.
You have a hose, right? Spray that SOB.
First, try a over-the-counter spray. If you don't feel confident that did the job, call an exterminator. Also, keep an eye on it next spring. With the cooler weather you may see activity drop off, giving the false illusion that you got them all.
But seriously, hire a pro. Several years ago, we noticed those ****ers showing up around the house. I had the luxury of stepping on one barefoot in our basement. Found a small nest in the bathroom window, used some Raid thought we were done.
One day my brother says something to my mom about a "nest" in our a dark corner of our partially unfinished basement. Yeah, there was a nest all right. Something like 10 feet long and 3 feet out from the wall. The nest in the bathroom window was because they were too full and were expanding elsewhere. Exterminator said there were more than enough there to swarm and kill a person. Both my brothers are allergic too. And unsurprisingly, I have a fairly healthy phobia of stinging insects now.
Hire a pro.
This applies here, regardless of the mention of spiders.
Call an exterminator. If you are dead set on doing it yourself, google drione dust.
I can't see the hive at all, I did buy something to try for now, but I'll just get an exterminator I think. I will already not be able to sleep tonight thinking about a 10 foot long hive in the roof over our bed. I swear I hear buzzing sounds now too.
I think they slow down during the cold, which is good. We discovered our nest in late summer, I believe. I really wish I we had taken a picture of the nest still up, but we were all pretty freaked out and stayed out of the basement until the exterminator could take care of it.