The self-adhesive electrodes that are used for MET need to be handled with care to optimise their lifespan. They do NOT have to be made wet before use. Always replace them on the plastic counterfoil when you are not using them. Never pick them up by the “pigtail”, since the “tail” may pull out from the pad. Just use your finger to lift a corner and then peel the electrode off. When putting the electrodes on your body, make sure two electrodes do not touch each other – if they do, it will cause a short-circuit and no treatment will occur. More information on the care of your pre-gelled electrodes follows later.