bad driver: leaving your car dusty for a month will lead to more scratches and marring. Why? Whatever comes in contact with your dusty car will cause marring. Less car wash does not always mean less swirls. Even if you wash it 2-3 times a week using proper procedures, hindi naman gagasgas
sofa foam is a big no-no. It doesn't have a pile that can draw away dirt and debris. Ang mangyayari parang ni-rub mo yung dirt sa surface. try to get a washmitt nalang. The chamois is ok as long as you only blot the surface. Pag may naipit na dumi pwede rin makagasgas.