I agree that for the schools' cleaning activities to have a lasting impact on students, it should be sustained after school hours, and parents should similarly encourage their children to tidy their own rooms and clean up after meals ("Parents should reinforce cleaning message schools teach" by Mr Ngian Kian Fah; and "What is point of cleaning activity?" by Mr David Soh Poh Huat, both published on Dec 14).
The question of how many children actually remind their parents to return their trays after eating at hawker centres or foodcourts has been asked.
Perhaps these children, having learnt from their teachers the good habits of tray return, had tried to influence their parents but their best efforts were thwarted by their parents or even their grandparents.
Many grandparents have the tendency to fuss over their grandchildren, such that the young do not need to do basic housework.
The older generation - that is, those born during or after World War II - also often fail to appreciate the importance of issues such as tray return or the recycling of waste.
To them, there is only one category of garbage. They may also deem it to be a waste of water to rinse any food residue off recyclables before throwing them into the recycling bin.
Perhaps, to reach out to this group of seniors, there should be a television programme in dialect to explain the proper way of tray return and waste recycling, as well as how their actions could have a positive impact on the environment.
Lee Kay Yan (Miss)