when i was doing my own biz my ads i delivered them to the letterboxes of the areas i was trying to get customers in

i tried one time to do this in bulk with a big letterbox delivery spam company, spent $700 on it, and got zero responses, out of 5000

i estimated that with a laser printer and personal delivery i got 1% response rate, so on equal volumes that means 50, so, comparing, zero versus 1%

most methods of advertising are extremely excessive in volume and indiscriminate in the targets

it's probably the same for you

i picked my areas... places with nice lawns and nice cars, places where people had the money to pay someone to come and fix their PC