Watch Expiration Date

I am looking for ways to specify an expiry period for a Watch. And was thinking of using the _ttl flag.
Are there any other ways to associate an expiry date with a Watch?

Unfortunately specifying a ttl is not going to work. We're planning to add snooze and enable/disable features to Watcher to make this work smoothly.

Thanks Martijin. Is there any ETA for the snooze or enable/disable feature?

Sorry, no ETA yet.