I think you could even go cheaper if you go to your local Home Depot and go to electricians section and look for cable cover. They have this black flexible tube w/ a split on one side to slip the cable inside. Also I can buy it at my local Ace hardware by the foot and it comes in different diameters ( I belive 1/2", 5/8",3/4",1"). I use this at my work to protect a pc switch from being chewed on by rats and haven't had the problem since.
![Wink ;)](/Smileys/throwback/wink.gif)