Nice
I received the cups, washed them out and was drinking out of one of them when I noticed inside by the logo was all black. I had to clean that out not sure what it was could’ve been dust. Could’ve been something else little disappointed that it was all dirty like that other than that they look great and I enjoy them.
Moscow Copper Co.
Hello Patricia.
Thank you for taking the time to leave a review.
Copper naturally develops oxidation when exposed to liquid. Depending on the mineral content of your water, this can happen fairly quickly. To keep your mugs looking their best, we recommend hand washing, drying right away, and avoiding the dishwasher. Oxidation is harmless, but if you prefer a shine, you can use our copper polish from the care kit. More details are available on our Care page.
Care Kit: https://moscowcopper.com/products/copper-cleaning-kit
Care Page: https://moscowcopper.com/blogs/the-mule-blog/copper-care-how-to-properly-clean-and-protect-your-moscow-mule-mug
Thank you.
Moscow Copper Co.