Recently I have switched all our water bottles for DC and the ones DH and I take to the gym etc, from plastic to the stainless steel ones. I prefer them as they keep the water cold and it’s just more pleasant than drinking out of plastic.
DH disagrees and thinks they’re less hygienic as you can’t put them in the dishwasher.
Who’s right, and how do you keep your metal bottles clean if you prefer them?