Restumping is not something that should be done all at once. A company should only perform resuming when they are doing a large project or to clean a carpet that has been coated with waterproof paint. This will allow it to be vacuumed or brushed free of any dirt or debris. Once this has been completed, the carpet should be given the proper care that it requires. This will prevent it from becoming discoloured or needing to be cleaned again in the future.