A padded collar should ideally not be washed in a washing machine, as it can shrink or lose its shape. Light stains can often be removed with a clothes brush. To treat perspiration and odors, it is recommended to air the collar thoroughly in a cool, dry place and, if necessary, use a fabric refresher spray or a nanotechnology-based waterproofing spray, which is dirt- and water-repellent and thus increases the material's lifespan.