Is Yoast Good Enough to get rid of Slug?

So Basicly I want to make sure I don't have duplicate content by not having a category attached to my permalink. On yoast I have stop words in Slug and strip the category base. Is this fine to get ride of slug in my permalink and not create two post permalinks. I heard this can happen… So im a bit worried. I read there is other plugins to get rid of slug, but if yoast can do it already and don't have to get other plugins are rather have less plugins. Also is there any benefit in…

Is Yoast Good Enough to get rid of Slug?