Parts can get stained due to the natural dye pigments of fruits and veggies, such as turmeric, carrots, and beets. Make sure to clean the juicer immediately after use under running water using the cleaning brushes. You can try to remove some of the colored stains by soaking the parts in 70% white wine vinegar and 30% water.Refer to the Shine Kitchen Co. Juicer SJX user manual for more information.