Just my opinion, but I don't think flyers work like they used to. At one time, going back some years, you could virtually be sure of that immediate response, which was only one or two per thousand, but it was there almost guaranteed. It seems to be very hit or miss these days, often resulting in a zero response. I'm not talking about a flyer campaign, just a one of leaflet drop. One of the reasons I don't bother with them so much now.