[header] How to keep spiders and scorpions out of your house using natural products [title] Purchase essential oils. [step] Essential oils, while quite pleasant smelling to humans, have been proven very useful in repelling spiders and scorpions. The smells can be overwhelming to their sensitive senses and keep them from infiltrating the area. 
[substeps] Some of the most effective essential oils in combating spiders and scorpions include peppermint, tea tree, neem, and citrus. Some recommend lavender for use in repelling spiders and scorpions, but results are mixed.