We sell a variety of cord cleats and tension devices to keep cord, string, and chain out of the reach of children. Cord cleats attach to the wall next to the window covering. You wrap long operating cords around them. Tension devices keep cord and bead chain loops fixed down tight. All cleats and tensioners that we sell are compliant with the Standard for Safety of Window Covering Products (ANSI/WCMA A100.1-2018).