I learned that you can use dental tablets (like the kind for cleaning dentures) to get tea and coffee stains out of mugs. I tried it out today because my favorite mug had picked up a lot of stains from the last kind of tea I bought and it seems like it works.
I filled the mug with water up to the stain line, dropped the tablet in and let it sit for about 30 minutes. I wasn't sure how long to leave it because some sites said 15 minutes and some said hours. I erred on the shorter side for the first time. When I was done, I dumped the liquid out and cleaned the mug with dish soap and a sponge like normal. It took a little bit of hard scrubbing but I got about 75% of the stains out. I'll definitely give it another try and see if I can get them all out later.
I filled the mug with water up to the stain line, dropped the tablet in and let it sit for about 30 minutes. I wasn't sure how long to leave it because some sites said 15 minutes and some said hours. I erred on the shorter side for the first time. When I was done, I dumped the liquid out and cleaned the mug with dish soap and a sponge like normal. It took a little bit of hard scrubbing but I got about 75% of the stains out. I'll definitely give it another try and see if I can get them all out later.