This was a Christmas gift for our 9-year old daughter who had really looking forward to grow crystals. The disappointment was huge when we read through the package insert with you and had to decide not anzuruehren these substances. Apparently, they are highly toxic - one may not be substituted by the crystals (or the individual substances) come into contact and they may not dispose of with normal household refuse. I would love to return the product, but the Sendegebuehren (from the Netherlands) were indeed higher than the cost of the product. Why is there such a thing in a harmless form? The crystals so do not have forms within a few hours.
Actually, this product has earned a single star !!
