There may be nothing more harmful to your machine and morning latte ritual than rotten milk. Our Rinza Milk Frother Cleaner is designed to safely use in your auto-frothers for a quick and easy old milk cleanup. This Rinza product can also be used on steam wands and frothing pitchers by simply leaving the affected item to soak under full immersion. For more difficult jobs, we recommend allowing the item to soak overnight in the Rinza liquid formula to help break down all of the milk proteins, fats and calcium that build-up in your machine. With the Rinza Milk Frother Cleaner your machine will produce better tasting drinks and reduce any substantial down time from excess rotten milk build ups.