I'm not sure how long these stickers have been around, but I heard about them and ordered some, if you don't like being disturbed by door to door salespeople I suggest you do the same, order a few to give to friends, family and neighbours, I think it is also important we protect our vulnerable from these leeches, give one to elderly friends and neighbours, so they don't get sucked in by these door to door liars, they work on commission, so they do anything to get a sale. Wouldn't it be great to get your whole street on board.