I've been using them for a while and they work great but the red one almost broke and although it doesn't seem like it's working anymore, it still works! I bought them mainly because my rabbit chewed on my original charger but he didn't even touch them so that's good. And yes, I put them in an area where he can get them. In any case, they work great, I was just worried that they would break soon, but since they come with reruns, I don't have to buy a new pair for a long time.