Oral rehydration therapy has changed the course of treatment for diarrheal diseases over the last decade and is now applied to all types of diarrhea in all age groups. Cost is minimal, administration is simple, and it is safe and effective. With a liberal intake of this fluid, adults and children both can replace volume and electrolytes lost due to diarrheal dehydration. 1 problem with the therapy, however, has been due to volume measure of the ingredients. Based on volume measures which were worked out, a standard 3 cc spoon has now been used adequately to measure the ingredients. Measurements have proven to be reasonably accurate and with little variation. A syringe barrel has also been used and with either method, only a few precautions must be observed. Problems with the prepackaging of ingredients were eliminated through a simple packaging system which involved weighing all 3 salts into 1 polyethylene bag and heat sealing the end, weighing the glucose into another bag and putting the 1st sealed bag into the 2nd, and heat sealing the 2nd bag containing the glucose and the sealed salt packet. These packets, called Kangaroo packets, can be kept for up to 9 months without any detectable change in components. Figures are included which demonstrate methods of preparation and prepackaging and a detailed description of the preparation, measurement, and packaging are included.