Liquid Fence brand produces some of the best-selling and most effective animal repellent products on the market. The Liquid Fence Dog and Cat Repellent RTU is an all-natural, biodegradable ready-to-use spray that contains natural plant oils that repel dogs and cats. Liquid Fence Dog and Cat Repellent can be safely sprayed on lawns, flowers, garden beds, trees, shrubs, and around garbage containers.