Hamilton Police are urging any retailers selling synthetic marijuana to take it off their shelves.
It's a man-made product, sold according to Health Canada under several brand names, that includes a blend of herbs and is sprayed with a compound that mimics the effects of marijuana.
Media Relations Officer Debbie McGreal-Dinning says it's an issue that has come to light after the entire supply of what was being sold as ISMZ was stolen during a robbery at The Love Shop a few days ago.
McGreal-Dinning says police want to let retailers know that such products are illegal.
She admits it's unclear how many businesses are selling synthetic marijuana in Hamilton, although she also stresses that it's not an epidemic and much of the current focus is on education.