For urban balcony or patio furniture, put on gloves first because bird droppings can carry germs, and check the care label. If the fabric cover is removable and the label allows it, take it off; otherwise clean it in place.
Don’t scrub the mess straight away. Wet it with cool water to soften it, then lift it off with a plastic scraper, an old credit card, or a soft brush. Try not to press it deeper into the weave.
Mix a small amount of mild dish soap with lukewarm water. Sponge or softly brush from the outside of the stain toward the center, then rinse with cool water. For any stain or smell left behind, use an enzyme cleaner designed for outdoor fabric—test a hidden area first. Avoid bleach, hot water, and pressure washing, as they can damage the fabric and stitching.
Rinse thoroughly, blot with a clean towel, and let it air-dry away from direct heat. Wash your hands afterwards. If the mess has soaked into the cushion filling or the stain keeps returning, have a professional outdoor furniture cleaner take a look.