[Snowball]

Bogys are night mobs like ghouls. They appear on the shorline in Buburimu. You're best off checking the beaches near the entrance to Bibiki Bay. There's a certain spawn up on the cliff of the very northwest corner of F10. The Mighoya and Khoonta Dunes have them anyhow.

If you want to kill them in Valkurm, they appear just inland of the beaches. There's only a couple there, though.

The ghouls... I've never had any kind of luck with them at all. Valkurm or Gusgen.
As a 34 whm, these should be relatively easy mobs, but bring echo drops!
Happy hunting.

Hmm.... according to http://ffxi.somepage.com/itemdb/2927
Echo Drops are a remedy for silence. If you are silenced, does that mean you cannot cast any spells at that time, so use Echo Drops to remedy that?

Also, how long does the inflicted silence treatment last for please?