It is true that they never dry out, but they get dirty. The problem with these is that they get dirty from kids' hands, making them useless after a while. Also, one other problem is that the gooey stuff holding the balls together doesn't dry, but disappears, making the balls fall about from one another. When I say disappears, I mean it gets all over your hands and absorbs into your skin.
Rating: [4 of 5 Stars!]