Files to delete

Where is this in the portable version? I am trying to erase the cache to reduce space on my thumb drive.
"Mozilla Firefox stores the saved files to the folder “Cache”, which you can find under the profile folder (%LOCALAPPDATA%\Mozilla\Firefox\Profiles\\). You can safely erase that folder when Firefox is not running."

Does deleting the places.sqlite and cookies.sqlite do anything in portable FF? This is also recommended to the standard install. Doesn/t places.sqlite hold your profile?