I needed to get some of those Cable Zipper snake things for our computer/video/stereo cords/equipment and we have a 2 year old cat that likes to chew on what he can. So before I waste my time, can someone who has a cord zipper tell me if these are strong enough to withstand a cat from continually chewing on it? It doesn't seem to say in any of the write ups what they are made out of so this is why I ask. If not, any other good ideas on what would work? We'll need to buy a bunch of these to cover up all of our lamp plug cords etc. as well so looks don't matter, just what will be most cost effective and effective regarding the bites. Thanks in advance for the replies.