Circular Distributors Ltd, now Whistl (Doordrop Media) Ltd was commissioned in 1955 by Unilever to deliver free samples of OMO soap powder to millions of UK households. The campaign was so successful that ladies kept the box and displayed it in their front window to signal that they were available. Since then doordrop samples have grown from strength to strength across Europe. ELMA is very proud to include in its porffolio of clients all major FMCG brands across Europe. Please browse our case studies.