Pigeons can be a persistent nuisance on outdoor seating, leaving behind droppings and creating unsanitary conditions. Fortunately, there are several effective methods to deter them without harming the birds.

1. Install Bird Spikes: These harmless plastic or metal spikes prevent pigeons from landing on railings, ledges, or seating edges. They are a long-term solution and blend discreetly into the environment.

2. Use Reflective Deterrents: Hanging shiny objects like CDs, reflective tape, or spinning decoys can scare pigeons away by creating unpredictable light reflections.

3. Apply Netting: Covering seating areas with bird netting physically blocks pigeons from accessing the space while allowing humans to enjoy the area freely.

4. Ultrasonic Devices: These emit high-frequency sounds that are unpleasant for pigeons but inaudible to humans, making them an unobtrusive option.

5. Natural Repellents: Spices like cayenne pepper or commercial bird repellent gels can discourage pigeons from perching, though these require regular reapplication.

6. Maintain Cleanliness: Pigeons are attracted to food scraps and debris. Regularly cleaning outdoor seating areas removes incentives for them to stay.

Combining these methods ensures a pigeon-free outdoor space while maintaining aesthetics and functionality. For severe infestations, consulting a professional pest control service may be necessary.