Do Spider Repellants Work?

All i can answer on is my experiences with our local uk spiders and they most def hate clove oil, this is the main ingredient in the spider away sprays and it works a treat, i spray it around the door and window frames and hey presto no more spiders tho u will have 2 redue this due 2 rain etc. Some websites charge ridiculous prices for these sprays, i have seen up2 �20 but i get them in my local shops for betwenn 99p and �2.50