New York (CNN Business) Another leading hotel company is eliminating tiny toiletries from its rooms.

Marriott MAR announced it's replacing travel-sized tubes of shampoo, conditioner and bath gel with larger bottles in an attempt to reduce plastic waste. The world's largest hotel chain said the switch is part of a larger test that it implemented in some of its North American hotels last year.

The change will affect roughly 500,000 guest rooms and will be made at most of its 7,000 hotels around the world by December 2020. Marriott owns several popular brands, including Courtyard, Ritz-Carlton, W Hotels and Sheraton.

Marriott's new toiletries.

Marriott said the small bottles currently used aren't usually recycled. Once the change is fully implemented, the hotel chain said it expects to reduce its plastic disposal by 30%, or nearly 2 million pounds of plastic it sends to landfills annually.

"Our guests are looking to us to make changes that will create a meaningful difference for the environment while not sacrificing the quality service and experience they expect from our hotels," Marriott CEO Arne Sorenson said in a statement.