Bottle Bright, $8.00 (12 Tablets)

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Runners hydrate. So they have lots of water bottles, and backpack reservoirs, and pitchers, and cups. Which get stained and smelly and just plain grody. Which is why any runner will love Bottle Bright, natural tablets that fizz away stains in 15–30 minutes, even in hard-to-reach crevices and corners. We’ve been amazed at their effectiveness and ease—practically magical. You may want some for yourself as well.