How to Remove Bird Poop Stains From Outdoor Furniture
Gently Brush the Stain. Spray, squirt, or pour the mixture on the stain left behind by the poop. Use a soft-bristled brush to gently brush the water and detergent mixture into the stain. If the bird's poop has left an extra stain because of its most recent meal (likely a berry stain), treat it with oxygen-based bleach. The Spruce / Almar Creative.