I just used Google and found these 2 sites helpful:

Read on the far right side, on this one:
http://www.ask.com/web?am=broad&q=ca...4423&l=dir&af=

http://landscaping.about.com/od/pest...repellents.htm

I wouldn't use the mothballs in the above, due to the comment of them being toxic.

I'm sure there are more on Google.

Let us know what works for you!