Clear, informative, and persuasive communications can significantly boost the success of your event by focusing participant attention on the 5 keys to behavior change (awareness, knowledge, resources, capacity, and motivation).

Here are a few things to consider:

Choosing Your Communication Outlets - which of these does your audience use?
1. Email
2. Internal communication/posting spaces
3. Social media
4. Traditional media
Communication Guidelines - how do you want to express your challenge to them?
1. Aim for positive, aspirational language because this is exponentially more motivating than negative, avoidance-based messages.
2. Audiences enjoy and respond more strongly to thinking about the ideal/desired end result of their actions more than to a picture of failure.
3. Loss aversion can be useful, but aspiration is even more powerful.

Communication Timing and Content Outline

Timing	Days	Action
Pre-Event	14 days before the event	announce upcoming challenge explain purpose encourage app download suggest litter picking tools
Pre-Event	7 days before the event	ask the audience to download the app ask the audience to make personal or public pledge statements solicit questions
Pre-Event	2 days before the event	remind the audience of the event clarify logistics share weather forecast encourage app download/testing share number of current pledges/participants share Two-minute Litter Pick You-Tube Video solicit questions
Event Start	Day of event start	re-announce event share purpose and logistics encourage app download suggest litter picking tools solicit personal/public pledges specify end date share a couple of pledges solicit images of participants conducting cleanups
During Event	3 days after the event start [events at least 7 days long]	event reminder share number of current participants share a few pledges share a few images of participants conducting cleanup
During Event	7 days after event start [events at least 10 days long]	event reminder and purpose share number of cumulative participants share a cumulative total of litter removed share a few pledges share a few images of participants conducting cleanup
During Event	14 days after the event start and every 7 days afterward [events at least 21 days long]	event reminder and purpose share number of cumulative participants share a cumulative total of litter removed share a few pledges share a few images of participants conducting cleanup
During Event	2 days before the end of the event [events at least 7 days long]	“last chance to participate” event reminder