BuzzFeed editor Jennae Sitz uses this defense against her cat.
“I recently decided to finally try these cord protectors and can absolutely vouch for their effectiveness. One of my cats, Sneaky, is notorious for chewing on cords and… I especially love going out into town with my automatic water dispenser charging cable. Check out the damage above. I was worried it would stop working completely, so I added these protectors to 1/2” I ordered by size. It's *very* easy to snap on and off, flexible enough to be removable, but thick and durable enough that kitten teeth can't compete with thick wire looms. Sneaky quickly realized he was finally defeated when he found these in his favorite chewing spot (I also applied a protector to my poor MacBook's charging wire, which also doesn't work anymore) was one target), and I don't even see him trying to bite anymore. .
I love that they come in different colors, different lengths, and sizes, so I can order as many as I need. I used a shorter piece for the fountain cable and a much longer piece for the MacBook charging cable to protect the entire area since I only cut as much as I needed for a particular area. I ordered one with a diameter of 1/2 inch, You can also go down to the 1/4-inch or 1/8-inch size if you only plan to cover one thin cable. So it's not as bulky as it looks above. If you plan to cover multiple cables at once, we recommend choosing a larger size. ”
Get it from Amazon for $8.99+ (available in 15 sizes and 3 colors).