Things You'll Need
Wash cloth or rough-sided sponge
Polywood brand outdoor furniture is made from high-density polyethylene (HDPE), which is a highly durable plastic. HDPE doesn't need to be stained or sealed. The sturdiness of the material means general cleaning is easy and you don't have to worry about using harsher tools or cleaners when you need to get the job done. Using common household cleaning items, you can often remove stains without having to buy any specialized products.
Fill a bucket with a soap and water solution. A mild soap such as dish detergent will work for general cleaning.
Remove any cushions on the furniture and place them out of the way.
Wipe the surface of the Polywood with a wash cloth or sponge. Stains may take some scrubbing to disappear completely.
Rub a bristle brush along the surface, and in creases or corners, to remove stubborn dirt particles and other debris.
Rinse with a hose until no soap residue is left.
Fill a bucket with a 1/3 bleach and 2/3 water solution.
Remove cushions and place them somewhere out of the way.
Scrub the stained area with the rough side of a sponge. Reapply your cleaning solution as necessary.
Rinse with a hose to prevent bleach stains.
Cleaning is best done on warm, dry days.
A high-pressure power washer can also be used, however Polywood suggests that power washers should not be more than 1,500 psi for this purpose.
The cushions can be cleaned the same way, using a soap and water solution.