Hindi ko na-try yan personally, pero honestly mama, mas safe na lang mag-consult muna sa pedia about it, lalo na if almost expired na talaga ang formula kasi baka may bacteria growth na or something, you know? A few of us in my circle just donate pa ang leftover formula sa daycare or local feeding programs instead, or ibigay sa mga kaibigan na may babies pa, kaya hindi ma-waste at nakakatulong pa! For the picky eater issue, better to talk to your doctor about why ayaw niya ng brand para mahanap ninyo yung swak, rather than risk it sa bath talaga.