First prize is to avoid getting polishes and waxes onto these surfaces by carefully masking them off. Meguiar’s Gold Class Trim Detailer [G10810] is ideal for removing polish and wax residue from rubbers. It also restores colour & richness to discoloured trim/mouldings and is suitable for use on all porous & non-porous black trim. Meguiar’s Ultimate Liquid Wax [G18216] is one of very few waxes available that will not discolour black plastic and rubber trims.