Last time I was at my parent's place my mom asked if I wanted an old OC spray bottle. I noticed on the bottom of the canister an expiration date that was partially worn off, what I could read indicates it expired sometime in 1997. I don't know what the shelf life of OC sprays are but I'm quite certain that this is well past its prime. I offered to take it off her hands only so she did not have to concern herself with disposing of it. She rediscovered it recently, and said it was left behind at their place by one of my sisters when in grad school.
By giving it a shake I can tell this thing is still quite full of fluid and likely has never been used. I have not even tried it myself as I have little idea what to expect. I've had to experience OC in the Army, I'm quite certain I don't want to recreate the experience.
Should I just chuck it in the trash? I thought about taking it to the rifle range and put a hole in it first but later thought that might not be a good idea. Is this thing even considered dangerous after so long?