The last day to enter Kellogg's Family Rewards in-package codes is January 31, 2017.
After 1/31, they will not longer give you points for the codes found on products.
The e-mail I received this morning indicates, "It's a new year – time to clean out those cupboards and pantries, because you just might have some KFR points hidden in there! Please enter codes from any packages you have by 1/31/17. After this date, on-pack codes will no longer be accepted."
You can enter the codes on the Kellogg's website.
New to KelloggsFamilyRewards.com?
If you are new to KelloggsFamilyRewards.com, it's a free program sponsored by Kellogg's that allows you to get free coupons and other items by entering the codes on participating products into their website.
Once you sign up at the site, enter your store reward card numbers and the points will be automatically added to your account when you buy participating products. You can also upload your receipts to earn points. See more details on the Kellogg's website.
Sometimes they offer bonus codes through e-mail on on their social media pages that can be entered on their website.
Once you earn enough points from entering codes, you can redeem them for various things like printable coupons. You can redeem 850 points for a $1.00/1 coupon for various Kellogg's products like cereal, Eggo waffles, crackers, cookies, veggie burgers and more. And these coupons will double when Harris Teeter offers the Super Double promotion!
There are a ton of participating products and you can see this list on their website.