Having this silicone mold (like here from other customers recommended) cleaned 10 times stank this not as disgusting as out of the box, but the silicone mold had but believed the smell of the tracer agent. After twice making ice cubes that disappeared from the silicone mold, but was included in the ice cubes. Then the silicone mold and the ice was nearly odor / tasteless.
But that's not all. The custom built with the silicone mold ice I let then thaw in a glass and then had to find that the water in the thawed ice white deposits were probably small Kalkklumpen. In addition, floating on the water surface of small islands, probably from lime. In the silicone mold, I found also a white coating. Presumably, the silicone mold react with the lime in the water - or maybe the white stuff is something worse.
** See Customerpictures under the product photos! **
On tap water, it can not be. I've done with the same water repeatedly ice in a plastic mold and can also thaw for comparison. In condensation of plastic form were virtually no residue.
Nevertheless, further multiple cleaning the silicone mold does not disappear the white deposits in the silicone mold and the baptismal water of the ice!
So who is on ice cubes with disgust factor, which should access. In any case, a nice gift for the mother or the annoying unloved neighbors.