People don't realise it, but it is very important to wash your car every 2 weeks. This keep the paint being damaged by environmental factors such as metalic particles, dust, bird droppings and tree sap damaging the paint. Metalic particles along with moisture from the air form rust particle and it gets lodged in the paiint. Longer it stays harder it is get it removed. Tee sape and bird droppings are acidic in nature and eat away the clear coat and paint and damage the paint. It is very important to wash the area as soon as you notice any bird droppings or tree sape. Also it is imporatnt to keep away from sprinker water showering your car and creating water spots. Washing it every two weeks keeps the damage to paint to a minimum.