hello mummies.. any idea .. if formula tin once opened .. must discard within 4 weeks? I'm on mix feeding... like that means I will waste a lot of milk powder?

To be frank, 4 weeks is recommended. But..... How many of us can afford to keep throwing. Nothing will happen even if you use the milk. It is not spoilt. As long as it does not harden. Dont say few months la. Hahaha.

thanks