Import bookmarks from Firefox

I have used Firefox for years and have numerous folders with bookmarks.

In Safari I have attempted many times to import the bookmarks from FF but to no avail.

I use the following procedure:

In Safari >import >Users > my user name > library > Mozilla > Extensions > (folder is empty)

There is no Firefox folder in the library or anywhere I can think to look.

Also there is no reference to Firefox in the system library.

Spotlight is very unreliable anyway but the only search item it shows in the Firefox application

Harold