The Feliway diffuser has arrived! This simulates the natural pheromones released when a cat rubs his face against an object or person. This pheromone makes a cat feel safe, secure and relaxed, so hopefully will stop the scratching of wallpaper and furniture, assuming that it is stress related. It will take a little time to infuse and needs to be constantly plugged in for a month or so. We will re-assess the situation then.