They'll be gasping in disgust and shouting "Gross!" as they see what mucks up a smoker's lungs. This longtime favorite makes a powerful impact as part of any tobacco education lesson. Tar is sealed in an easy-to-handle, shatterproof container that allows everyone in your audience to get a firsthand look at the gooey cancer-causing liquid created by cigarette smoke. Represents the amount of tar that goes through the lungs of a half-pack-a-day smoker in the span of 1 year.