Anywhere where they have Enfamil they should accept it,although i have only ever used them at Target but it is like a manufacturer coupon. I have only ever been able to use one per container.
I registered with enfamil online and they send me monthly e-mails as well as these checks. Usually I get two in the mail that expire within a month's time and they are for $5 each. They even had a promotion on their site a while back where they'd send you a case of their pre-mixed formula with milk and soy. A case arrived on my doorstep of like 30 2oz bottles. And those little dandies are not cheap in the stores. Plus, I get mailers for rebates, too. They actually just sent me a $15 rebate check which arrived yesterday. Seriously, sign up on their site.
Re: Enfamil Check ?