I've used a stainless Thermos daily for a couple of years and its insides are encrusted in coffee and it smells of old milk. My cleaning routine is a quick soak in the wup bowl, rinse, turn upside down. Should I be cleaning more thoroughly (for health reasons)?
I've used a stainless Thermos daily for a couple of years and its insides are encrusted in coffee and it smells of old milk. My cleaning routine is a quick soak in the wup bowl, rinse, turn upside down. Should I be cleaning more thoroughly (for health reasons)?