Thanks so much for your feedback.
We are sorry to hear that you are experiencing these stains on your new sink. I assure you, they are not rust marks. Typically, when red spots appear on a Stainless Steel Sink like ours it is simply surface discoloration. This is usually taken care of permanently with a stainless steel polish and/or cleaner when used according to the directions of the cleaning product. Products such as Bar Keeper’s friend and a fine 3M Scotch Brite pad are both great options. However, if you do not find that this resolves your issue entirely, please contact our customer service department directly at 1-800-775-0703 or email me directly at mrodriguez@kraususa.com so I can look into this personally. I have also opened a case for you with our Customer Service Team. Case # 136805.
Please feel free to reference your case # 136805 when contacting us.
Thank you for sharing your experience with us and giving us the opportunity to remedy the situation.
Best,
Mike
Kraus USA