They can be installed easily using a screwdriver that is also provided along with the outlet covers.
You can use the Jambini Self-Closing Outlet Covers on both décor style power outlets as well as standard power outlets. They are truly universal in this sense, as you do not have to get them specially made for a different kind of power outlet in your home.
You do not have to replace the covers as the Jambini Self-Closing Outlet Covers are of a sturdy and firm quality, but at the same time, they are not bulky. If you have to place any furniture against the wall, you can do it easily without having to move these covers. The design is also simple and classy and the covers are white in color to match the outlets.