I'd also be curious if you're targeting B2B or households with door-to-door? Seems like going after property management companies in your area would be worthwhile door to walk through, among others. Fred's right though, there's a lot to consider when it comes to understanding what's causing the lack of results. From who you're targeting, the script you have, the offer you're presenting, the design of the flyer, how many doors per day, KPI's, the people you have on the streets, training, etc.
-Chris
