Originally Posted by Technonut Technonut's Tinkering Corner Today's installment: DIY E-Juice It's REALLY easy and economically advantageous to make your own e-juice. If one knows where to look, the supplies are inexpensive, and controlling your own nic content and flavor can be very gratifying. Depending upon your part of the country, (or World) most places have a livestock store somewhere within driving distance. In my area, I go to Tractor Supply for gallon size USP 100% PG. Ideal Animal Health Propylene Glycol, U.S.P., 1 gal. - 2209731 | Tractor Supply Company ...