Environmentally friendly cleaning brand Ecover is hoping to encourage larger manufacturers to share its ecological approach ­ by giving away its secrets. In an unusual move, the company is disclosing its new laundry powder formula on packaging and leaflets across its range. Its £1m four-week promotional campaign also includes posters across London, money off coupons and an on-pack money-back offer for consumers who recommend a friend to the brand. {{P&P }}