Ns.db-- this is the one that is tracking tasks
that are set to run on that device,
including garbage collection.
So when we look at this, we can see, under tag, we
have flush_logs, flush_logs.
You may see periodic clean up.
You can see something here, refresh_license.
If you see flush_logs, I would look at what it's actually
going to flush and the runtime.
And if you find that you can't uncover information,
or recover, or carve, it's because garbage collection
has run on that device.
These are not user-created, so that's a good point too.
This is not that the user forces this to happen.
This is the Android doing its job
to clean up, to provide you with more user privacy.