Walmart is launching what the company's calling "the nation's largest" car seat recycling effort next month. Customers will be able to trade in used car seats at the service desk at more than four thousand Walmart stores across the country. Customers will receive a $30 Walmart gift card to use in store or online. The car seats collected will be recycled through the company "Terracycle", with components divered from landfills. The event will run from September 16th through 30th.