The world's largest consumer product maker says it is stepping up its environmental efforts with tough long-term targets on energy efficiency and reducing waste.

Procter & Gamble said Monday that it eventually will use only renewable energy to power its factories and only recycled or renewable materials to make and package its products.

The maker of Pampers diapers, Gillette shavers and numerous other top-selling products says it will take decades to achieve these goals. But it has set 10-year targets and will provide updates each year.

Bob McDonald, P&G's chairman, president and CEO, said Monday in an announcement webcast from Geneva that consumers applaud improvements to help the environment, and the new effort should help P&G's business.