I agree with the previous speaker. If even the already finished crystals are highly toxic to adults, how can children do something with it?!? Already when you open the package without plastic bag to open, penetrate the substances .... and this they reach a truly been through the film to breath ... I do not know what it does to lungs sick people ... Fortunately, I've read through everything before opening! Our package went back definitely, we absolutely NO BUY recommendation. Too bad.
