I bought this product because a cat has homely furnished on my convertible fabric roof in double parking, especially overnight, and the roof as a scratching post and coat rack is damaged. I love cats per se, but the thing is me too costly and annoying. An alternative stored in Parker Katzenkorb she has not accepted. Therefore, the search for other possibilities. This product acts to be carried out and thought through stable, but: In my case it was unfortunately ineffective. The only thing that was helped with the advantages and disadvantages of this air with a motion that is offered here on Amazon. However, the cat then has always tried to hike around this spray and has jumped from all possible sides to the roof or has established itself on the warm hood, so I had to buy at the end of three of them; Also, the spray cans empty adventurous fast and I find plenty of expensive. But the blast to protect the roof was a electric mat, specifically available at a fence manufacturer for cats as innocuous Katzenschreck. A regular fence itself will not do so because of the sensitive car electronics and the lack of contact with the ground, so this mat is specially crafted, where current-carrying and grounded wires are inserted alternately side by side. When not in use it is located in the trunk or back seat and is once parked afloat launched. So much for the problem Cat on a convertible roof.