This spring i decided instead of replacing the old solar yard lights and try restoring the plastic cells do to oxidation.
Cleaning plastic garden solar panel.
Use terry cloth towel to dust off all of the dirt.
How to clean the solar panels fill a bucket with warm water and mix just enough mild detergent to work up a bit of a lather.
Unfortunately they can get very dirty yellow and faded being outside all the time.
Cover the areas surrounding the plastic either the housing for the cells or the lid of a light with a built in solar panel with painter s tape before applying the chosen clear coat material.
Do not use any other cleaning agents like bleach as this will damage the surface.
Wash the panel and bulb with soap and water regularly to prevent built up grime from inhibiting the light s performance.
These clear coatings render the plastic clear once again.
Restoring plastic solar cells like new.
Wipe the entire plastic solar panel down in a circular motion.
Simply use clean water and a cloth covered sponge or soft plastic brush.
Scratches on a solar panel can create shadows and affect efficiency.
Rainwater is low in mineral content but some people have hard water or mineral rich water from the tap.
This should get a majority of the surface dust off of the solar panel.
Fix that cloudy plastic covering the solar cells by coating it with a thin layer of clear nail polish or a spray on clear lacquer.
Use a garden hose to spray water all over the solar lights.
A few easy maintenance steps can help clean cloudy solar lights.