If you are like me and thousands of homeowners out there, you probably have a couple of Christmas lights and ornaments on your lawn. Aside from choosing the appropriate ornament (indoors or outdoors), you also need to use an extension cord that is rated for use outdoors. Cords like these are made to withstand extreme temperatures, rain and snow. Using an indoor extension cord outside of your home will run you the risk of electrical problems and even fire. You can usually find the information of whether it is an outdoor or indoor plug in the tag that is attached to the cord. You should also purchase Christmas decors, lighting and extension cords that are rated by UL (United Laboratories). This means that the product passed a stringent test and is rated safe to use.