Chad(my bf) is very scared of spiders, so I was looking online for spider killers and I found some ideas online, most say vingar, some say vingar and pepper...the best one I think used vingar, pepper, soap, oil
take one cup of vingar, one cup of pepper powder, a teaspoon of oil and liquid soap.
put it into a spray bottle and spay along the outside of your door(outside door) and along windows
refresh after it rains
or try washing your floors in vingar and water.
from my online research, spiders hate strong smells, also I think the acid in the vingar must help
or try hedgeapple or osage orange. That is supposed to keep them away.