However, effective presentations require a knowledgeable presenter. Newsletters can target a specific audience, but they require an investment in maintenance of the mailing list and production of the newsletter. Other publications such as bulletins and fact sheets tend to be more durable than newsletters. They work especially well to convey a standard message, finding or technique that will remain relevant and useful for some time. Permanent displays in prominent locations continue to educate long after the initial investment.
Regular changes guard against fading or boredom.
A display map showing the extent of weed invasion and new weed locations encourages public participation in scouting for new problem areas. Portable displays can be brought to the audience and shown in poster sessions at symposia or other conferences, fairs or meetings. They can also be moved from one public place to another to reach new audiences who frequent different areas. When communicating with a large number of people, select the communication tool that best fits your purposes and your budget. Better yet, select a combination of techniques to get beyond exposure to actual influence, learning, and conviction.