Depends for me if within a month or two it starts to be cloudy, dirty Ill change. Throw, buy new ones. Therefore, I will always have atleast 5 bottles to interchange when needed.
Same as well. Most time ill remove teats soak with hot water n bottle detergent before rinsing thoroughly. So I dont have to worry bout it being mouldy dirty.
Young mummy of two beautiful girls Loves to travel, ✈