Need a sticker - Catalyst marked to prevent theft

bgum wrote:
Pass law that they can only be sold to fed or state gov. Someone with investigation and prosecution capability. Put some teeth in pursuit.

Again that won't stop it because it is the extracted metals that are worth the money - not the cat itself.

The thieves aren't stealing them and selling them for scrap. They are stealing them and selling them to someone else who extracts the metal. That second line isn't a "legal" business.