VB Electronics invented their Jackal Deterrent upon request from desperate farmers. The Jackal Deterrent is a device which emits sound and light every ten minutes when connected to a 12 volt source. The Jackal Deterrent has a very low power consumption and can be operated for up to 7 days, 24/7 on a single fully charged standard size automotive battery. We can also supply a self contained battery and solar panel unit for the Jackal Deterrent. The Jackal Deterrent is not the absolute answer to the problem, but according to reviews from users, it seems to be about 90% effective. However, VB Electronics does not guarantee any results, but the quantities we sell every lambing season to existing clients as well as newcomers, should indicate a reasonable amount of success. The Jackal Deterrent does not scare your stock; neither does it hurt the Jackal. One of our clients claims that he got rid of troublesome baboons using his Jackal Deterrent! If you save the life of one sheep the unit pays for itself!