Yes, that black stuff is mold. By Knvul Sheikh Reusable water bottles are a great way to get hydrated and stay energized. Many can help minimize your exposure to nanoplastics. They’re trendy, and ...

Water bottles can develop a stubborn mold problem, especially in those rubbery lids and straws. No wonder, since most of us use them daily and don't clean them nearly that often. Water bottles may be ...