removing dropbox on Lion 10.7.5

I am trying to remove Dropbox from my iMac (Lion 10.7.5). I have been following instructions which were pointed out in a apple community response to another lister.

Unfortunately in my haste, I closed the Dropbox account before I actually did the removals, I am thinking that wasn't the right way to go about this.

I have gotten to the "removing Dropbox application settings:" using the Go to folder and pasting ~/.dropbox, and this changed to ~/.dropbox-master.

There it had instance.dbx and hostkeys and something else (?). I dragged those to the trash and then used the secure empty trash, but started to panic that possibly I shouldn't do that until I confirm with someone in the Community who actually knows about this (as I obviously don't).

So I stopped the secure empty trash and dragged the hostkeys out to the desktop. I didn't know what hostkeys was, but it had the same date as the other Dropbox files.

Currently there isn't anything in the .dropbox-master folder, but in the trash, there is the Dropbox.app, the Getting Started.pdf and the instance.dbx.

Does anyone know if I should continue to securely empty those items from the trash, as well as the hostkeys or does the hostkeys apply to something else and need to remain?

Also, I had downloaded the Dropbox onto my iPad Mini and I wonder if there is anything to do to delete that, as I did it by holding down the desktop icon and then exing it out.

Thanks to anyone who cares to help.