I noticed that it’s cheaper on eBay.
I have to quote this section of the article as it covers how to clean these stainless steel mugs and what to use:
Care and maintenance
If you’re drinking anything besides water, gunk will build up over time. If you don’t like gunk, you’ll need to clean your mug from time to time and the best way to do that is with a bottle brush and some baking soda and vinegar. After a couple hours of research, we found that the best bottle cleaning set out there is the $13 OXO Good Grips Bottle Cleaning set. It comes with a large bottle brush, a skinny straw brush, and a looped detail cleaning brush, all kept together by a handy ring so you won’t lose any of the parts. The set is dishwasher safe, and after 96 separate reviews it doesn’t have a single one-star review on Amazon, so it’s a pretty good bet for anyone looking to get gunk out of their hard-to-clean items. We bought a couple sets to confirm their quality and they are as good as we thought they would be.
The competition offers similar products for a similar price point—the OXO set is $12.99—but there are downfalls. A $9.99 set from Contigo generally serves the same purpose, but some users think the bristles are too soft and that the entire set is difficult to store, especially since they are not held together by anything. There is another bottle brush kit for just over $14 from Camelback, but it doesn’t come with a detail brush and users generally feel the quality isn’t as high as the brushes from OXO.
Photo Credit: flickr.