With cause advertising, often the biggest hurdle is that the benefit of what you are selling is not immediately apparent.
For instance, a woman who turns off a couple of lights on Earth Day will never get to see the effect of her actions on the climate.
An office-goer who begins to recycle his juice bottles won’t notice any difference to the amount of plastic in the oceans.
A smoker who quits won’t get to see how that affects his lungs right away.
When cause and effect are separated by time and space, your task is as simple as bringing them together.
Juxtapose the two any way you can.