left formula box open overnight - ok to use?

[Nancy54]

hi, I my dtb a bottle on an evenin and last night, i left the box of formula open. The box is not airtight anyway so i am assuming it is still ok to use?

has anyone else done this and what did you do?

should be fine. Air gets in and out the box every time it is opened

It would still be ok to use.

You should be making with water over 70 degrees anyway to kill germs, as as others said it is unsterile and germs get in and out all day

Thanks