The Star Brite Spider and Bird Stain Remover will break down the droppings from birds and spiders with a simple spray! The non-abrasive, non-toxic formula won't harm fiberglass or painted surfaces and won't remove waxes or polish. Safe for use around kids and pets; no bleach. Safe for all marine surfaces and fabrics. DirectionsSpray directly on droppings, saturating them. Allow it to penetrate the droppings for 30-45 seconds before gently scrubbing with a boat brush. Rinse well with fresh water. Stubborn or sun-baked droppings may require a second application. Test for effect on color in an inconspicuous area before proceeding with overall cleaning. Won't remove waxes or polish Safe around kids & pets Safe for all marine surfaces | Camping World Star Brite Spider and Bird Stain Remover