Well, I think I got rid of all mine. My shredder made good work of them (it made confetti that should make good bedding for gerbils). They did tend to clog the shredder blades, though, and I could only make two bags of confetti (one bag=a grocery plastic bag full) at a time before cooling the shredder. That project took about a month, but at least I will have an apartment that's Watchtower free.
Kinda reminds me of the situation when I had to throw away all my Christmas decorations, and found the other half of them about 2 1/2 years later. At least it didn't take me any 2 1/2 years this time.