Frances Dauster, CPDT, is a trainer in Alabama, USA, Frances volunteered her own arm to experience the immediate sensations & also any lingering after-effects of a shock-collar; BEAR IN MIND that she is controlling the intensity, duration, & timing – none of those 3 factors are under the control o... From http://www.dogsmith.com/DogSmithBlog/2012/01/12/the-truth-about-shock-collars/
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