wash it, take cleaner wax over it, i like mothers cleaner wax, if its bad use a claybar first, for glass use whatever glass clearner you like, if there is water spots on outside of glass that wont come off fine steel wool can be used, leather seats need wiped over with a conditioner, i dont really have a preference there, never had a problem with any of it. the mats if they are bad can be scrubbed with laundry detergent and hosed out