Most people are concerned about the environment and want to do their part.
Given good information on goals and objectives, clear instructions on how to make changes and positive feedback on the results of their efforts, nearly everyone will participate. On the other hand, without good information and feedback, even the most committed individuals may eventually become frustrated, confused or uninterested. Good communication need not be elaborate or expensive. What's more important is that communication be frequent, clear, visible and useful. In a small office, posting simple signs and memos, and providing regular verbal feedback, may be enough to do the job.