A tobacco detection dog helped sniff out almost 79,000 illegal cigarettes and over a kilo of tobacco in a two-day operation across Herts - Credit: Archant More than 65,000 cigarettes have been seized in Stevenage following a two-day operation led by Hertfordshire Trading Standards. In total Trading Standards - with the help of Herts police and a sniffer dog - took in a hoard of 79,000 cigarettes and over a kilo of tobacco from premises' in Stevenage, Watford, Hemel Hempstead and Borehamwood. The specially trained dog accompanied Hertfordshire County Council’s trading standards officers who carried out inspections across the county to identify and disrupt the supply of illegal tobacco.