This question came to mind.
What to do with the trits that don`t "glow" anymore?
let`s say, 10 years from now, you`ll have a light with dead trits, and want to get rid of the trits..
where and how can you dispose them?
eat them for breakfast, muahahaha
Ten years from now, the answer will probably be different than it is today.
And it will depend on where you live. As with all low level waste, a single item is trivial.
Similar issue for ionization type smoke detectors where I live right now, they’re hard to get rid of.
I once emailed people at Oak Ridge to ask about some very old large electronics tubes that have a radiation trefoil. The answer was “don’t break it, and don’t eat it.”l
You could email these folks and inquire; they ought to add the tritium light sources to their museum page; Museum of Radiation and Radioactivity
I think after 10 years it will not die but only be half as bright. another ten years it will be a quarter brighter and so on. . .
I wouldn’t worry about it. It’s not like it’s Radium.
http://www.epa.gov/radiation/radionuclides/tritium.html
_
How does tritium change in the environment?
Tritium readily forms water when exposed to oxygen. As it undergoes radioactive decay, tritium emits a very low energy beta particle and transforms to stable, nonradioactive helium. Tritium has a half-life of 12.3 years._
for some reason the first thing I thought of when I saw the title of this thread was “eat crayons, poop rainbow”
Crack ’em open and inhale that sweet sweet tritium.
If it’s in a light, most people use norland or similar UV glue. Then it’s simple, no? You won’t be able to remove the vial without cracking it. Just do it outside and hold your breath. 
I wonder if it'll set off the alarm driving across the border. A few months ago it was all hands on deck at the US border when the guy in front of me set off the alarm. He had some kind of procedure or surgery done a few weeks before and the sensors picked up the radioactive stuff in him. Once inside, customs guy turned on an Gieger counter and it started to scream as he walked towards him from 20 ft away. Watching him what he had to go through made me feel better about my so-called "random vehicle inspection". Luckily he had the paperwork on his procedure/surgery. Otherwise they would have stripped his car into a million pieces.
First, the decay product is low energy electron (18keV). So low that it will not penetrate the dead cells outside your skin. The only way it can hard you is that you inhale or drink it. Then it gives internal irradiation.
The biological half-life inside human body is only about 10 days, meaning that you take 1 mCi H3, ten days later there is only 0.5 mCi inside you. So even if someone eats it, it is not going to kill him.
I would say just leave it. The half life of 12.3 years does not mean it will stop glowing in 12.3 years, but only dimmer (half of the initial lumen number to be exact). It will continue to glow and be usable for many years.
I thought someone said the radioactive emissions from tritium can’t go through the glass vial. Is that true?
Just reading the title, I thought “Send them to Wales!!!” then I realized it was Trits… Not Brits… Then I thought, “without the R, this post would be getting tons of hits”. Its been a long week…
Send it to Iran. Or north Korea.
Trits will not set off any alarms, the low energy beta radiation does not penetrate the glass.
Thanks that's good to know.
It takes a scintillator detector to pick it up. Not the regular GM counters.
I was worried about the heat of the light, then I realized… they use high heat to melt the glass tube to seal the vial, how hot does it need to be to melt glass? MUCH hotter than any light I want to be holding!
I was going to say get implants but then realized I misread the post
I don’t know how radioactive they remain so i don’t know what kind of disposal instructions are required