Rinse the vehicle to remove loose dirt. Soak the Multi-Sponge in a bucket of car shampoo solution. Use the soft grey side to wash paintwork and large exterior areas with plenty of lubrication, regularly rinsing the sponge in clean water. For more stubborn grime, such as insect residue on the front end, gently use the white textured side. After washing, rinse the sponge thoroughly and allow it to air dry.