Danger: blue buttons

I've never reviewed a product with only one star and until this morning I had not also occur in the ball track. Because the ball track is actually very nice and even withstands when my 10 months old son it pulls up. But now I can not help it, for the simple reason to indicate a hazard. As I unpacked the ball track, already one of the eight blue buttons was (in the picture well seen) loose in box. But good can happen've put it aside, he has only the function to cover a screw. This morning, while playing, then dropped a second button. Good thing I was doing, because otherwise my son would have the safe in the mouth. I do not even want to imagine what could have happened to me. Thereupon, I've looked at the rest of the buttons. And what can I say, I did not have to pull large, touch enough and really all the buttons could be solved quite simply. Unfortunately, this is a no-go for young children's toys. Therefore, unfortunately, only one star!