Some other info that mnight help Michael,

The Essebtail Oil info is from a Vegan site I visit that has good info.
I use a few of these Oils myself for Bug control and they seem to work very well.

For detering Fleas,
Tea-tree, eucalyptus, mint, rosemary and lavender oil are all good bug repellents - ask at a Natural Living Center if they would be willing to make a spray up for you rather than buying each oil, much cheaper that way! and then spray it a few times on your Carpet and in your closet.

For detering Spiders
A spray made with chestnut and clove scents deters spiders.
Again a Natural Living Center they may be be able to make you up a Spray containg these oils.
Cedar and Citronella sounds good too.

Good luck!
Not pleasant for you
Best Wishes
Jude