The most important thing to know is that they are very dangerous and poorly constructed: they can electrocute you severely or fatally, or kill you, children, pets or guests. Note that in the photo above there is a strip of metal at the base of the bulb - it connects directly to the part of the bulb that connects to the outlet, so it connects directly to the 120V wiring that the garland is connected to Powered and fully exposed. I'm an electrical engineer and I can say they will never meet UL or product safety standards. I got a nasty electric shock trying to install them. Anyone near them when they are on can get the same thing - they are dangerous. I can't believe they're allowed to sell.
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