KinderPet Cat Repellent Anti Fouling Spray 2.5L Refill is a safe and humane alternative to deter nuisance fouling, digging and scratching by cats. KinderPet is FREE from chemicals, so is KINDER to YOU, PETS and the PLANET. At KinderPet we are passionate about pets and making products which are kinder to pets and the planet. Ensure the area being sprayed is free from signs of digging, scratching and fouling. Spray liberally and directly onto the ground in areas where cats are causing a nuisance. It is best to choose a day when the weather is fine, dry and winds are light. It will create an invisible barrier and the cat will seek out new areas to dig, foul and cause a nuisance such as your neighbours! This spray is effective for 7 days or more but if it rains, we recommend respraying.