Thailand has unveiled a plan to tackle a growing problem of rubbish left each day by crowds mourning King Bhumibol Adulyadej around the royal palace.
The Bangkok Metropolitan Administration (BMA) said volunteers feeding visitors should now use biodegradable food boxes instead of plastic foam ones.
Mourners are also being urged to bring their own food boxes and water bottles.
Some 200,000 people gather in front of the palace in the capital every day, producing about 76 tonnes of waste.
King Bhumibol died on 13 October, after 70 years as head of state.
The 88-year-old king was widely revered and seen as a stabilising figure in a country hit by cycles of political turmoil and multiple coups.
Official mourning will last a year.