I bought the extra large patches to put on the corners of the couch and it has helped by keeping the cats away. It is not invisible though.
Cats used other furniture. I would have to cover every single piece for this to be effective.
The idea sounds great, but it doesn't bother my Bengal walking on the sticky tape or even sitting on it. Maybe works on some cats but not the smart ones!
THIS IS A WONDEFUL PRODUCT!! Has stopped my cats from sharpening their claws on my lounge and also from getting into my pot plants. Highly recommended!