If you've ever had a puppy or a particularly suicidal cat, you know pets have a strange desire to chew on power cords. This causes all sorts of problems. Over on Cool Tools, they recommend cheap plastic tubing to keep your cords safe.
The tubing is a 7mm Split Loom, like this one that you can get for $19.99. Just wrap your cords in the tubing, and you're all set. Easy as that. The best part is you don't have to deal with those weird, expensive and foul-smelling solutions you often find at pet stores.
Split Loom Tubing [Cool Tools]