We all go around saying what we will do for our customers, maybe even putting it on leaflets too. (e.g. wipe cills, clean frames, conscientious, professional, reliable etc.)
How about putting what we won't do..... such as:-
Won't look in their bedroom windows. (Squeaky can't say that mind
)
Won't steal things from their back garden.
Won't tell the neighbours about their minging wall paper/3-piece suite/cooker.
Won't drop f a g s in their back garden.
Won't tell Harry the housebreaker when they're on holiday.
Won't tell Damien the druggie when they're on holiday.
Won't tell Kev the Car thief where they hang the keys.