That's the main quality of this barbed ideal to prevent access to cats jumping on a wall, a fence or a gate. Indeed, with sufficient son, and also with the points close to each other, cats can not be supported by jumping anywhere. Further tips can be bent to orient the most favorable side. The strand is tough, but with gloves and tweezers can draw it and / or give it the shape that fits. See attached pictures. Traditional wire are not effective in this case, especially because of their points too sparse.
