Details from the site: $10 gift card when you buy 3 select Iams, Pedigree, Cesar, Sheba, The Goodlife, Temptations, Crave & Nutro cat & dog food items.
$5 gift card with a $25 purchase of select pet food when you use promo code MARS. Enter the promo code in cart at checkout to receive the gift card. Not valid on previous orders. Quantities limited.
Not the greatest deal in the world but Iams deals seem few and far between.