I HATE spiders. Now my TT has these little spiders living in it. I don't know where we could have picked them up. There are lots of them. I tried spraying around the floor and corners with spider ...
Some people have luck with citrus sprays (natural) Try it if you dont want to bomb the rig. (google how to make it). Might not work but worth a shot, at least your RV will smell good :)