Because of the aggressive nature of KBS Strip, we do not recommend getting KBS Strip on plastic because the KBS Strip could damage the plastic.
If you are desperate, you can always use KBS Strip on plastic, but be incredibly careful and minimize the amount of time the KBS Strip is on the surface. Multiple treatments of KBS Strip with less time per treatment is the way to go.
Please check out the KBS Strip Directions for before you get going on your project.