pathauto not working for category vocabs?

I have pathauto controlling the alias' for all my nodes, however I am noticing some peculiarities with it.

Firstly, all my categories (taxonomy definitions) do not have the spaces removed and replaced by the "-" which i have specified. So the url ends up being "mysite.com/category name" which is pretty bad.

Secondly, how do i put a trailing "/" at the end of each alias? From my research in SEO, google prefers either an extension such as html, or a "/" to indicate a directory. I have set it in pathauto to put a trailing slash on the end, but it never does it.

I want to get these stored before I get too much content and incoming links, because then it will be painful to change.

Thanks