Denicool crystals look a lot like rock salt to me. Anyone know what they're made of ? Someone gave me a box......jury is out whether they're useful.
Very same experience here, then we have(at least in Germany) those meerschaum chips which unfortunately are more expensive optionI recently ordered some of the Denicool crystals and they added a distinct chemical taste to the smoke. Also I could detect the chemical taste in the next bowl of tobacco without the crystals. I threw them in the trash. I've had better luck with activated carbon crystals in the bottom of the bowl.