I use this product called "Goo Gone" to remove any sticky residue, and it has a citrus scent to it.
You can buy it for $1 or so at any automotic or hardware/home improvement store.
Edit: here's a link to it...
http://www.officedepot.com/shop/cata...27686&LEVEL=SK
Ok, maybe it's a little more expensive than I thought
