What remedies can I use to kill and have spiders away out of my room?

I’m thinking of doing an extreme clean up of my whole room since my mother doesn’t want to call an exterminator and I try to tell her that most of the big spiders are coming the basement because I’m really not sure but there was workers down in the basement and they cracked out some big hole out the ground and I really hope they have something to cover it back up since I believe that’s where all the big black, very long legged spiders are coming from and there are some cracks down there too but I don’t think I have any cracks in my room(probably just from air conditioner the way it’s adjusted from the inside and outside). Just now I freaked out because I was just on my laptop and all of a sudden a somewhat big yellow spider came down at my face,which has never happened in my life until now(I think I have a phobia of spiders) :-(