Someone asked me once if 'that cr@p really works' i said well so far the girls seem less irritable and i'm not having to dose them with nurofen and panadol so i'd say YES.
DD1 was horrid when teething, her poor cheeks would turn purple, some MG girls commented on the MAJOR different b/w purple and red cheeks so i knew it wasn't just me.

In regards to it not being SAFE i have on numerous occasions explained to people that the girls one has a knot between each individual bead so if 1 does happen to come off it's ONLY ONE and on occasion have pointed out that their uncovered powerpoints, sharp objects or crappy small plastic toys are of more danger to my kids