not quite sure what happened, but i know it happened in the yard. our kids are 1 and 3. they never have access to the scissors, actually we keep them in the top cabinets where i sometimes even have to get a chair to get them. someone could easily reach axle, esp. if he stood up against the fence, since he is 2ft taller than our fence when he's on his back legs. (luckily he can't jump b/c the HD) not sure that they would be feeling me being more cautious, because i didn't act any different or do anything different until they started acting flippy. they usually get 45 minutes or so to "play" outside while i clean in the afternoons, but they are just as happy without it.