Can Listerine kill THC in the cheeks?

Listerine is primarily designed to kill bacteria and freshen breath, but it is not effective at eliminating THC from the cheeks or oral mucosa. THC, the psychoactive compound in cannabis, binds to receptors in the body and is not simply washed away by mouthwash. While Listerine may mask the odor of cannabis, it does not neutralize or eliminate THC itself. For any concerns regarding THC detection or use, it's best to consult with a professional.