Ground raw hulled Pumpkin Seeds are a good natural wormer. There is a coating on the seed that paralyzes the worm and then the worm can be expelled by the digestive action of the gut. It is good to feed something that will cause the animal to have a slight diaherea (flush) like molasses or skim milk about an hour or two after the seeds have been eaten.
Carrots, if the cell stucture of the carrot is broken down like in a juicer will do, also help get rid of worms.
got this from groups.msn.com/limitedpoultry/aboutwormers.msnw