In my opinion, the health problems of elderly scavengers deserve the attention of social groups. You can organize relevant departments and set up an organization to protect the elderly scavengers. You can also make love donations to the society at ordinary times, buy the money you earn into ready-made materials, or give them to scavengers or take them to the hospital for physical examination.
There is also a waste collection office in the community, which can collect recyclable waste such as plastic bottles and cardboard shells. When a certain amount is reached, it can be directly taken away by scavengers, so that they can give some help on the basis of their own labor.
Or, the government department should set up a concentration department for the elderly, specifically for the elderly who have lost their children because of financial difficulties at home, and provide them with some jobs suitable for them on a regular basis, and organize some volunteers to accompany the elderly at ordinary times, so that the elderly can get better help.