I discovered that all spiders have their taste buds on the tips of their legs. There are certain natural oils they hate, including citrus, lavender, peppermint, citronella, cinnamon, tea tree and cloves. This natural spider deterrent does wonders to combat an arachnid invasion, and with repeated use will help repel spiders year round:
Add up to 5 drops of essential oil (lemon is my favorite and spiders detest it) and up to 5 drops of dish washing liquid to 1 qt. of water. Pour the mixture into a spray bottle and shake well.
Pots of mint and lavender inside your home on a sunny windowsill will also help deter indoor spiders