Small bird sitting on someone's front porch - Devilino/Shutterstock A lazy afternoon on the patio can quickly turn sour when you notice an unsightly splatter right in the middle of your favorite ...

Bird droppings, pollen, tree sap, and blown dirt and lawn debris can make them grimy. Exposure to rain and snow, too, can cause them to mildew. These cushions also get plenty of abuse in warmer months ...