Brian, I would recommend creating a strategy that focuses on engagement with current customers. Prospective customers who then land on their social profile, such as Facebook, would then see ongoing conversation with current customers that will build instant credibility.
For example, you could suggest a Bug of the week contest - post a picture of a crazy bug and ask customers to name the bug. The customer with the right guess gets to give 1 friend a free month of pest service. That way the friend will become the referral source and address both your goals in 1 contest. To get current customers aware of the promotion create a 1 page flyer that posts 1 of the contest bug pictures and include a picture of the winner and quickly explain the contest. Asking the field team to make current customers aware of the Facebook contest will increase current customers to become fans of the page and help increase awareness to their friends as well.
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