Do I need to clay my car?
Your eye may not see contaminants bonded your paint that washing alone will not remove. A quick test to see if claying your car would be of benefit is to put your hand in a sandwich bag and run it lightly over the bodywork. Any grittiness felt are the contaminants such as iron particles, tree sap and bug remnants. The G3 Professional Deep Clean Clay Mitt will lift these particles from paintwork and glass, leaving a smooth finish ready for finishing with a sealant or wax.
You can do the bag test again after using the clay mitt to feel the difference.