My local indoor range has a box by the firing stalls for dud rounds. I don't know what they do with them, but they do something. If you can, check with a local range as to how they dispose of them. They may want to charge a small amount for a "few hundred" of them, but it would be well worth it.
You should also contact the manufacturer about it and see what they say, although I'm reasonably sure they would not take back and replace ammo misfires because of a soaking you gave them.
I'd also like some specifics from you as to exactly how they all got wet. I would really like to hear that story. Pardon my intense curiosity about that part, your screen name of "Leaky Waders" notwithstanding.
I'd find it unusual that they were all ruined. They are pretty well sealed, what with wax and so forth, and I would suspect that a light firing pin blow due to dirt in the firing mechanism, dirt on the breech face, or a dented breech face can be causing your misfires. Did you try them in a different --or a cleaned --gun? Did you rotate the ones you attempted to fire in the chamber to see if hitting them at a different point would set them off?
I also understand that newer priming compositions are not as long-lived as the older lead styphnate or lead resorcinol primers, so I wonder how old the cartridges are.
All in all, possibly the best thing to do is to attempt to fire them all into a safe backstop with a clean modern gun, and if they don't fire for real then think about safe disposal methods. However, beware of a real squib round sticking in the bore.
I suppose the politically correct answer would be to contact the local PD about it, but, well... ummmm... I suppose that option depends on where you live.
Terry, 230RN