You take raw ginger put it in water and bring it to a boil. Use a big pot (the one you use for spagetti). After it boils for 15 to 20 min, take it off the heat. Run water in the tub, the water should be as warm as the person can take. Before the person gets in put the ginger root water in the tub. Mix it around. The whole body should be covered. Let them sit there for as long as they can take it. Once out. Put them in long pajamas, wrap them with a blanket, put them to bed, and put the other blankets on top. They'll start to sweat out the fever. Found this on www.herbalhealer.com website when my tots had high fevers.