The life of a car seat is short. Recycling them is difficult and you don't want expired ones to be in use. Walmart has kicked off a recycling program that goes until September 30, in which, they will give you a gift card if you bring in an old car seat to be recycled. It looked as if most of the Northern Colorado's Walmart's were participating in the program, but you might want to double check here.

From Walmart.com:

Walmart and TerraCycle are joining forces to launch the nation’s largest car seat recycling event in nearly 4,000 Walmart stores across the country.

The first-ever Walmart Car Seat Recycling Event will take place Sept. 16-30, in celebration of National Baby Safety Month. Customers can trade in used car seats at the Service desk in any participating Walmart store and receive a $30 Walmart gift card* that can be used in store or online to buy items for their baby. All car seats collected in this program will be recycled through TerraCycle, and each component will be diverted from the landfill.