Old Navy shoppers can participate in the Flip Flop Replay by depositing their used flip flops in colorful collection bins found inside any Old Navy store, including the St. Louis Park location. The St. Louis Park Old Navy store is located at Knollwood Mall, 8332 Hwy. 7. The collection runs through May 21. TerraCycle, based in Trenton, N.J., will then recycle the flip-flops into material used on playgrounds, which will be donated to communities across the country.