Install a Fence: A high, solid fence or one with an outward slant at the top can prevent cats from jumping over into your yard and creating a physical barrier to keep them out.
Use Cat Repellent Sprays: Commercial or homemade cat repellent sprays, such as citrus or essential oils, can deter cats from entering your yard due to their strong, unpleasant scent.
Plant Cat-Repellent Plants: Certain plants like lavender, rue, or rosemary are known to repel cats with their scent. Planting these around the perimeter of your yard can help keep them away.
Set Up Motion-Activated Sprinklers: Motion-activated sprinklers release a burst of water when triggered, which can startle cats and discourage them from entering your yard while keeping your garden watered.
Provide a Discomforting Surface: Cats dislike walking on uncomfortable surfaces, so spreading materials like gravel, sharp mulch, or pinecones in areas you want to protect can deter them from lingering.
Use Ultrasonic Devices: Ultrasonic repellents emit a high-pitched sound that humans can't hear but is unpleasant for cats, effectively driving them away without harming them.
Remove Food Sources: Make sure to remove any food sources, like bird feeders or pet food, which might attract cats into your yard. Keeping your yard clean of scraps will reduce their incentive to visit.