Never had an earplug get stuck, nor become “sharp”.
How far are they sticking them in?
The ones I use are the exact ones in the video. (I however cut the cord off)
The ends are flared, so it’s seemingly impossible to put them too far in.
I’d guess if you keep using the same pair over and over again they could get stiff or start to tear apart, but you shouldn’t use the same pair for more than a few times before tossing them for a new pair. That’s the beauty of the foam type, they are so cheap you can do that.
Not sure which earplugs you're talking about, too much hokum in that video to sort it out.
We entered jobsites with a pocket full of plugs, and there's always a box full in every truck, so we didn't use the same plugs for days.
A couple of hours with sweat, coal dust, asbestos, (you name it) running into your ears, and those foamies turn to crap. Add the fact that the noise is so fierce you can hear the steam leak from the front gate, above the din of the plant. Some people have larger ear canals also, so an extra poke here and there to get some noise reduction, and by lunch it's too deep to get a grip on.
Once those edges collect a little dirt combined with moisture, they're as hard as wedding prick. At least it feels that way in your ear, they become very uncomfortable. May as well twist a 3/8" tap in your ear and get the cutting over with.
I like the ones with the vanes, but not the mushroom shape, haven't found a pic to post an example. The gel plugs with the string are crap also.
But, different strokes, the ones that fit you
best and block the noise best are the ones you want to use. Ears are almost like fingerprints.
We finally got the company to stop supplying the foam plugs, they were a last resort.
Found a pic: