Won't shut off without removing batteries [SEP] Impulse buy while at Walmart, mainly for heel cracks that the pedi-egg was making worse. While this seems like it might work, it turned right on without depressing the small white &#34;safety&#34; button, and then wouldn't turn off again. The only way we could get it to stop was to take out the batteries. Going to return and see if it was a one-off defective item, but this is annoying.