How long can you use a coil head before throwing it out?

[EBates]

I have said before, the wires, wicks, and that kind of stuff cannot be touched by the government because they have too many other uses. The devices maybe, but that will likely be fairly easy to get around even if you have to build your own "flashlight". The real issue is going to be the liquid.

I agree. That's why God invented DIY. I'm in the rookie stages of learning DIY as we speak.
Definitely, don't want to be trying to track down coil heads, or Joe's Famous e-juice once the hammer falls. Just sayin'

 

[YoursTruli]

It does depend on what type of coil head, juice you vape and such... but when your vape quality is getting bad, less vapor, change in flavor, darkened juice, it is usually time. I found even if I boil them the taste is still bad, I can replace the wick on some non-rebuildable coils heads I have but on ones like the gs air I have not been able to.