Not everyone is a wiccan who practice Wicca.You call demons demons unless your part of the left hand path,and say daemon.Not everyone who practice the left hand path says daemon.
Wicca has many branches, so you might get different answers depending. Demons are usually seen like spirits, they're not from hell, but they're like an energy being.
While demons can be included in Wicca, they are not inherently a part of their belief system. Going off of Nekoshema's answer, generally most people just view them as darker entities, rather than inherently "evil" entities. Daemons are Greek entities, who are an entirely different race of spirits (though the word Demon does etymologically come from the word Daemon).
"Demons". at least by that name, are not part of Wiccan beliefs.
However, Wiccans do believe that there are spiritual entities that exist, some of which can be very malicious. So in this regard I suppose one could say that a Wiccan would at least believe in something which could be construed as being a demon.
We don't work with these entities nor do we try to summon or control them. They are not part of Wiccan practice. At most we might banish one or shield and ward ourselves against them.
Otherkin nailed it; the Left Hand Path call them Demons. Wiccans don't like the term because it has the negative connotation from Christianity but basically they are the same thing as nature spirits, pagan gods, faeries, etc. Really, Satan in his Christian(not Hebrew) context is an insult to the gods Pan and Cernunnos. Wictans I think they're called do work with Samael, Lilith and all their friends if that's what you are referring to.
I would take issue with the idea that "nature spirits, Pagan gods, and faeries" are actually demons. The idea that the Gods and Goddesses worshiped in Wicca and other Pagan religions are simply demons by another name smacks of the Judeo-Christian beliefs that anything other than the One God of those Traditions is by it's very nature Satanic. And while that might be their opinion it is not a given truth.
If by "Wictan" you mean someone who follows Wicca and Satanism at the same time, I would have to say that I have never met someone who does so or heard that term. Satan has no place in Wiccan practices as he is part of the Judeo-Christian belief system and not of Wiccan belief. Now, I could agree that there are those out there who practice a blended form of Witchcraft and Satanism; however, as has been said over and over, Witchcraft and Wicca are separate things.
