But it seems the Wairarapa isn't the only region embracing the campaign.
Chief executive Sue Chetwin said the stickers had proved so popular it was now printing more to meet demand.
"We launched this campaign because of the serious complaints we get about the hard-sell and exploitative sales tactics used by door-to-door traders. Our "Do Not Knock" stickers have given people a simple way to tell these traders they're not welcome," she said.
Since the launch, Consumer New Zealand has heard from more people who have had bad experiences with door-to-door traders.
"The most concerning cases involve elderly people who have been pressured to buy products - including extremely heavy vacuum cleaners - they don't need and are unable to use," Ms Chetwin said.
Requests for "Do Not Knock" stickers have come from individuals and community organisations including those working in areas where there have been problems with mobile clothing trucks.
Consumer New Zealand is encouraging people who don't want door-to-door sellers knocking to put a sticker on their letterbox, front gate or front door. If a door-to-door seller ignores the sticker, they're likely to be trespassing, Ms Chetwin said.
It has also called for changes to the Fair Trading Act to make it an offence for sellers to ignore a "Do Not Knock" sign.
-To receive a sticker send a stamped, self-addressed envelope to: Do Not Knock, Consumer NZ, Private Bag 6996, Marion Square, Wellington 6141.
