While the power of a pressure washer is tempting for cleaning outdoor furniture, it is generally not recommended for Polywood urban outdoor furniture. Polywood is made from recycled high-density polyethylene (HDPE) plastic and is designed to withstand the elements, but its surface can be damaged by the intense, concentrated force of a pressure washer. This high-pressure stream can etch the material, create small grooves where dirt can accumulate, and potentially void the warranty.
For safe and effective cleaning, follow these steps:
1. Use a Garden Hose: Rinse the furniture thoroughly with a gentle spray from a garden hose to remove loose dirt and debris.
2. Prepare a Mild Cleaning Solution: Mix warm water with a few drops of mild dish soap or a cleaner specifically designed for plastic outdoor furniture.
3. Scrub Gently: Using a soft-bristled brush or a non-abrasive sponge, scrub the surfaces with the soapy solution. This is effective for removing most stains, pollen, and bird droppings.
4. Rinse Thoroughly: Rinse away all soap residue completely with the garden hose.
5. Air Dry: Allow the furniture to air dry completely.
For tougher mildew or stains, you can use a solution of one part distilled white vinegar to one part water. Always test any cleaner on a small, inconspicuous area first. The best practice for maintaining your Polywood furniture's color and longevity is regular, gentle cleaning with the right materials, preserving its beauty for many seasons without the risk of damage from high-pressure equipment.