1. Use bird spikes or netting: Bird spikes are thin metal rods that are attached to the top of your fence railings. They make it uncomfortable for birds to land and perch, so they'll be less likely to poop on your fence. Bird netting is another option that can help to deter birds. It's made of thin plastic mesh that can be hung over the top of your fence.
2. Apply a repellent: There are a number of commercial repellents available that can help to deter birds. These products are usually applied to the surface of your fence railings, and they emit a scent that birds find unpleasant.
3. Remove food sources: Birds are attracted to food, so if you have any bird feeders or other sources of food in your yard, they're more likely to visit your fence and poop on it. Remove any bird feeders and keep your trash cans covered.
4. Keep your fence clean: Birds are also attracted to dirt, so it's important to keep your fence clean. Sweep or wash it regularly to remove any dirt or debris.
5. Plant bird deterrents: There are certain types of plants that birds find unpleasant, and planting these around your fence can help to deter them. Some examples include lemongrass, peppermint, rosemary, and garlic.
6. Use a bird house: Providing a bird house in your yard can give birds a place to nest and roost, which can discourage them from perching on your fence.
7. Install a bird bath: Birds need to drink water, so providing a bird bath in your yard can also help to attract them away from your fence.