 They crumbled. And most importantly, they were toxic. They used lots of toxic pigments and materials. Although I do say to kids, the crayons are non-toxic, but having said that, I wouldn't advise you to go and eat a whole box of crayons necessarily. All it means is if you eat a little bit, you know, you're not going to be poisoned. But I think that awareness that materials could be made safer for especially kids