There are some TENS (transcutaneous electrical nerve stimulation) units that come with free electrodes. Yet, it’s not a guarantee that these electrodes are of prime quality. The common complaints among the users include the poor adhesiveness of the electrodes and at times, there are some people who develop rashes on the spots where the electrodes have been placed. Choosing electrodes for TENS unit isn’t an exact science. Kudos to this person who has a story to tell on how she was able to find just the right electrodes as you may learn from her own experience with other types of electrodes.