Every time you take a sip from your water bottle, you are depositing bacteria inside and over the course of a day these can ...

Bacteria and molds that collect in dirty reusable water ... and a brown film transferred onto the bristles. Instead, I've found that it's better to clean the straw separately using a straw brush ...

Beeswax wraps are completely biodegradable, washable, very versatile, and, unlike cling film or even aluminum foil, reusable ... it first to make sure it's clean), and, like Ebby demonstrates ...

Credit: Eyeem / Getty Images It takes a lot of grime for a reusable water bottle to look ... sure you are dumping water into your body from a clean vessel. And yours is probably not that clean.

But, last week I'd poured some cafetière coffee into my reusable cup and hadn't given ... "But we recommend a thorough clean once a week," reads the care instructions on the website.