My son has worms, he hasn't had treatment but all the worms are dead..no live ones at all.. i've checked and every one is dead..how are they dead?

Dead?: Worms where? Parasites do not live long outside the body and depends on the kind of worms. It is the eggs that reproduce and are likely still an issue. Please seek treatment for him.

What worms ?: From your description it is not clear whether these were a parasite or something he swallowed. If you summit questions in the future please provide more detail, such as a description of the worm in question. Since there is more than one possibility, further comment is not possible.