Filthy water bottle? Here’s how to clean it the right way

Woman drinking from a reusable water bottle outside.

I have a kitchen cupboard dedicated to the best water bottles, and I don't think my family is alone in our obsession with them. There's one for work, one for the gym, and one for days out. And every time I open the cupboard door, at least one water bottle tumbles out.

While my water bottle cupboard could use a declutter, the bottles could also benefit from a deep clean. However, I get stuck on knowing the best way to clean the water bottles and then keeping them that way.