The world's longest-lasting light bulb is the Centennial Light located at 4550 East Avenue, Livermore, California. It is maintained by the Livermore-Pleasanton Fire Department. The fire department claims that the bulb is at least 121 years old (installed in 1901) and has only been turned off a handful of times.

What I did find today at Dollar Tree is a 3 pack of bulbs rated 7 watt for $1.25. The likely replacement though is a 15 watt bulb at Walmart and it is a 2 pack for $3.00. None of these bulbs even look the same so I will change all 3 of the bulbs.

@Betty long ago, I once heard that turning bulbs on and off actually shortens their "lifespan." I have no idea if there were/is any merit to this idea.

@Gwen_Wanderer

I've heard the same thing. I believe they attribute the long-lasting Centennial Light's lifespan to that same principle. I think it has merit.

@Betty there have been times when I turn on the light and the bulb "snapped" and went out. I assume that is the same as touching it one too many times.

Planned obsolescence--it is "built" into everything we buy.

@Gwen_Wanderer And is responsible for so much of the garbage we throw in the landfills.