Silent Roar cat repellent is an effective, economical, and environmentally friendly way to keep unwanted cats away from your garden. Silent Roar cat repellent is highly effective, due to the fact that it plays on the territorial instincts of cats. Cats warn each other away by marking their territory, and even the bravest cat will retreat at the smell of lion dung. These pellets contain no artificial chemicals, or any ingredients which are harmful to your soil or plants. One application can help to keep unwanted cats out of your garden for up to three months. Please Note: We recommend you wear gloves when handling the pellets so as not to contaminate the lion scent with your own human scent. This will allow the repellent to work more effectively. Silent Roar has been sold successfully as a Cat Repeller for many years. However, due to new EU directives it is no longer possible to sell Silent Roar as a repeller without the manufacturer spending thousands on certification for the product. Having said this, Silent Roar is still the same great product it has always been and will continue to help keep unwanted cats away from your garden.