Advertising on all fronts, but door knocking is the best, leaflets work and it remind people your out there but it may not be an instant hit, and you may need to leaflet the area again the following month, then run ads in the local village mags,, local free papers, put posters up in local shops and finally have sign written van people see all these and slowly it will click, as they leave the local shop they see your poster, as they walk down the street your van goes past, they open the front door to be greeted by a flyer then as they make a cup of tea and flick through the local paper your ad is there again!
Finally somewhere it will sink in! That or they will hate the sight of you 😜😜
Google, facebook etc, are a bit different as the potential customer needs to look for you, traditional advertising is going to them.
Darran