If you’ve never used Lemi Shine you are missing out, especially if you have hard water. We had a white film on all of our (dishwasher clean) dishes, and the only thing that took it away was Lemi Shine. It’s also great to just run through your dishwasher on occassion to clean it out and remove any build up. Lemi Shine coupons are rare, but I heard from them today that they are setting up a coupon mailing list! All you need to do is send an email with your name and mailing address to coupons@EnviroconTech.com and they will add you to their coupon list! Coupons will be sent via snail mail.