Urnex's liquid cleaning agent works hard to keep your milk frothing device sanitary and properly performing. Milk protein build-up is no match for Rinza from Urnex. Rinza will clean not only traditional steam wands, but also stainless steel pitchers and automatic frothing devices. Help prevent the #1 cause of steam wand malfunction: clogs from milk residue with Urnex cleaner tablets.