Review on Ley's Scat Mat for Cats: Powerful Indoor/Outdoor Cat Deterrent with Spikes by Larry Cole

I was concerned they might hurt my 5 month old kitten as he jumps from desk to computer desk (again overlaying the forbidden kitchen counter). I decided to leave room on the desk to land on and then surround most of the computer with pieces of garbage mat. (In the picture you can't see the carpet behind the monitor to stop the kitten while he carefully jumps over the keyboard!) I then used double sided tape to keep the pieces from flying off the table (cats are SO SMART ! ). So far (3 days) everything is working as planned. Kitty leaps to the landing pad, but then crashes into pieces of carpet, carefully stretching out her paw, and deciding not to proceed and causing a feline mess. Ideal. He wasn't hurt and my computer and router are safe too.