Refocus from "Your neighbors thought of us"
to...
"Your neighbors thought of YOU!!!"
Then, instead of listing your services, have a nice big, bright coupon or free gift along with copy that says something to the effect of: Get your house washed by the only contractor using low pressure, earth friendly soaps so you can enjoy the siding on your house for many years to come... like your neighbors did. Unlike other pressure washing companies that use extreme pressure on your house like 3500 psi machines, that can potentially damage your house and shorten the life of your siding, you can sit back and relax knowing you have saved thousands of dollars by choosing us to gently and thoroughly take care of your most prized asset; your house.
I dunno, something like that.
Next, have the testimonial of the neighbor that you just washed right below that copy.
Then something like: We are in this neighborhood next Tuesday, if you don't want to miss out on this money saving opportunity, call us tomorrow to get your place in line. We have 4 spots open for that day, so call right away. The reason I can offer our services at such a low price is because we will be cleaning many of your neighbors houses, therefore saving us travel, and fuel. So, don't miss out, call us NOW and reserve your spot for next Tuesday.