Kids' juice drink Um Bongo is swelling its ranks, with the launch of a new 1 litre family carton. Its Um Ognob variant is also being relaunched in 250ml and 1 litre sizes. Jo Wren, marketing manager of manufacturer Gerber Foods, said the larger cartons increased the brand's convenience and versatility. Gerber has targeted the quirky brand ­ renowned for its 1980s jingle, They drink it in the Congo' ­ directly at children.The Um Jungle Patrol challenge has schools creating jungle animals from recycled materials. {{MARKETING - P&P }}