I built a number of window cleaning rounds and obtained gutter cleaning work and pressure washing using only canvassing, of course word of mouth did the rest. It is by far the quickest, easiest, and most effective way of getting work. Infact, even though I do no exterior work at all now I weekly get calls from customer I canvassed years ago, but for a totally different service. The best thing is it cost me £0 only my time.