HI Friends who use Drionic,
What is the average life of the drionic units that you use?

I have bought 2 units until now, which I use very carefully but after
2 uses(12 dry weeks) each, both units lost their zap. Its not a
question of the batteries or the plates.

Are there any alternatives to Drionic out there? I do not want to
undergo surgery. Ive heard too many accounts of side-effects.