Formula Container

No Keeping them in the actual containers are freshest Unless u referring to the paper boxes kind?

I don’t, and not necessary. Just ensure you close back the lid tightly will do.

I used lock and lock container as i bought those packet milk powder.

Not necessary as long as u make sure its closed properly

I did in Tupperware containers also not necessary

I did. Using locks and locks container

I didn’t and it’s not necessary

Not necessary (:

No and no need.

not necessary