Want to avoid the scrubbing? This year, we were also impressed by Bottle Bright’s water bottle cleaning tablets. They’re easy to use: simply fill the bottle with warm water, drop in a tablet, and wait 15 to 30 minutes before rinsing. The real key to a clean water bottle is to commit to a quick clean every single day—procrastination could lead to mildew that requires a serious scrubbing. And to avoid wastefully tossing out plastic shower curtain liners, start by investing in a mildew-resistant option that’s proven to last longer, like this $9 option we discovered in 2019. One reviewer even called this “the Cadillac of shower curtains.” Then, follow these steps to keep your towels fresh—plus how to rescue towels that have developed that dreaded mildew smell.