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The garden hose conveniently rinses off nearby concrete surfaces.Jupiterimages/Photos.com/Getty Images
Hose down the concrete where the bird droppings have stained the surface. After wetting the surface of the concrete, adjust the nozzle on the hose to a hard stream of water, rather than a spray. Use this stream to remove any dried-on bird droppings from the concrete. - 2). Combine 1/2 cup sudsy ammonia with 1 gallon hot water. Soak a natural-bristle scrub brush in the ammonia mixture, and then wash the concrete with the solution. Move the scrub brush back and forth over the concrete, making sure to scrub in the grooves of any textured surface added to the concrete.
- 3). Cover the scrubbed area of the concrete with a mound of cat litter. Allow the cat litter to remain in place until it absorbs the ammonia and water solution then dries. Using the cat litter to absorb the ammonia solution saves you from having to rinse it into the grass or garden area, where it can damage plants.
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Cat litter absorbs cleaning solutions so you don't have to rinse them into the grass.Jupiterimages/liquidlibrary/Getty Images
Sweep the dried cat litter off the surface with a broom and dustpan. Ensure the entire bird dropping stain has been removed and repeat these steps if any stain remains. Rinse cat litter dust off the concrete with a hose.
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