Cleaning stained cushions used outside can be a bit more challenging than cleaning indoor cushions, but it's definitely doable. Here are a few tips for cleaning stained cushions used outside:

    1. Identify the stain: Identify the type of stain on the cushion and choose the appropriate cleaning solution. For example, mild detergent and water can be used for most stains, but a more powerful solution may be needed for stubborn stains such as oil or mildew.
    2. Test the cleaning solution: Before using any cleaning solution on the entire cushion, test it on a small, inconspicuous area first to make sure it doesn't cause any damage or discoloration.
    3. Spot clean: Use a clean cloth or sponge to apply the cleaning solution directly to the stain, working it in gently. Use a clean cloth or sponge to wipe away the cleaning solution and the stain.
    4. Rinse the cushion: Rinse the cushion thoroughly with clean water to remove any remaining cleaning solution or stain.
    5. Dry the cushion: Allow the cushion to dry completely before using it again. It may be necessary to lay it flat or hang it up to dry depending on the shape and size of the cushion.
    6. Use Sun protection spray: Once the cushion is dry, you can apply a UV protection spray to help protect the cushion from further sun damage.

It's important to note that if the cushion is made of a fabric that is not water-resistant or water-repellent, you should avoid getting the cushion too wet and instead just spot cleaning it. Also, always check the care label of your cushion before cleaning to ensure you don't damage the fabric.