Clean plastic lawn chairs by mixing a gallon of warm water with 3/4 cup of chlorine bleach and 1 tablespoon of mild detergent, such as laundry or dishwashing soap. Apply the mixture with a soft brush and allow it to stand for at least 15 minutes before rinsing with water.
Plastic resin furniture is an inexpensive option that does not rot like wood or rust like metal. However, the ultraviolet rays of the sun can fade the color or turn white furniture yellow. Abrasive cleaners often cause the furniture to deteriorate faster. If attempts at cleaning the furniture are not successful, use spray paint to give it a like-new appearance.