[yakuza70]

My car needs to be clayed several times a year. I park in an underground garage in my condo complex at night but it stays outside for 10-12 hours a day while I'm at work - lots of sun, tree sap, pollen, bird droppings etc. I've noticed that the paint gets contaminated faster when dew forms on the paint surface in the early morning (I get to work at 6 am and it's still dark and cold), dries in the morning sun, and gets "baked" into the surface.