Spray on wax doesn't last or protect as well as real wax IMO. Real carnauba lasts considerably longer and can be reapplied. The spray on I use only for touch up in between waxings.\n\nIf the car is garaged, clay only needs to happen maybe once a year. If it sits outside, maybe two depending on where you are and what it gets parked near. I always follow that up with a mild polish (depending on the condition of the paint) and then a good wax.\n Correct. I wax my truck a few times a year but after every wash a spray wax to keep it nice and to the touch. Spray wax seems to keep the wax feeling fresh and dirt just rolls off. My truck stays amazingly clean by keeping up with it .\n I only clay when it needs it. I have no intervals.