Activists dressed as Ghostbusters corralled others dressed as Zombie TVs on Saturday at the Ypsilanti Townshpi Walmart to urge the store to recycle electronics as part of a National Day of Walmart Actions, according to a news release.

Advocates of electronics recycling from the website takeitbackwalmart.com called on Walmart to take back the electronics it sells, saying competitors such as Best Buy, Apple and Samsung offer recycling programs. The advocates held events at Walmart stores in Michigan, Texas, Ohio, New York and Connecticut.

“While Walmart challenges its competitors to match their prices, we are pressing Walmart to match Best Buy’s electronics recycling program and support for federal legislation to stop electronics from being dumped in developing countries,” Emily Woodcock, a Ypsilanti resident, said in a statement supporting the efforts of takeitbackwalmart.com, a website promoting greener electronic practices at Walmart.

More than 15,000 letters in support of the recycling effort have been sent to Walmart headquarters and store managers since June, the release said.

Below is a video that the group says was recorded in the local Walmart.