Bitter end doesnt always work. its easy to find in stores but you may want to try something differernt. Bitter apple usually works and smetimes household items (safe ones) work just fine to prevent chewing.

Pros: some dogs dont like the smell or taste

Cons: some do

This worked so good that I only needed to use one time. Harley won't go near the wires in my house now. It has been a few months now. I still can't believe how good it worked.

Pros: Works great

Cons: have a whole bottle, only needed to spray once

I tried this version of repellant on a chair leg that my dog wanted to destroy It worked for an hour or so. I then tried Bitter Apple and that kept him away for good.

Pros: does some good at training

Cons: not as good as bitter apple