Vodou is a beautiful belief system but unfortunatly it is mixed with Xian Religion. You can see they associated Lwas with those false "Saints".
Gods of Vodou, known as Lwa or Loa, are the Gods of Gentiles which we reffer as Demons.
For example; Ezili Freda is Lady Astarte (also known as Aphrodite, İnanna, Ishtar, Asherah etc).
When you call for Demons you can use their names that mentioned in Vodou for praising you nationality but I don't reccomend practice the traditions of Vodou directly. They are mixed and influenced by Jewish Programs. Also in order to work with Lwa you should be a Mambo or Houngan, and for this you should get initiated.
So as I said if you want to stay in touch with Vodou, use names of the Lwa while calling for the Demons but never practice the parts of Vodou that influenced by Jews.