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Promote your service on billboards. Billboards seem to work well for local businesses working to capture people driving through an area. It is common for restaurants to advertise off highways to get customers off the road and into their establishment. A great advantage to billboard advertising is the cost is rather inexpensive. It is also more likely that a person would pass that billboard multiple times and see the advertisement multiple times, thus they would remember it better than an ad they saw only once in any other advertising form.