The easiest way to get a free sample of Baby formula is to sign up at Enfamil website: https://www.enfamil.ca/user/enrollment
I chose the earth friendly option as mentioned on their website during signup, and this option provides actual big sample coupons through email and mail. I received my coupons in a few weeks and i went over to loblaws supermarket and redeemed the coupons for free Enfamil baby formula full size products. Some of the coupons requires you to make a purchase with heavy discounts on Enfamil products. Two weeks before the due date of your baby, they will send you another packages on the mail containing some more samples or coupons for you to redeem at the stores.