We are only seeing one side of the situation but it does sound dire.
Presumably things were not like this until recently or why did he marry this woman and go on to have three children in quick succession. It sounds highly irresponsible and Granb3 your son must take some responsibility for this situation. There are 3 adults at home during the day and 3 children but your son works full time and then comes home to clean ? He really is , I am sorry to say a mug. I am sure the adults get benefits but your son is otherwise keeping the home ticking over. Nothing you can do but hope that he sorts out this situation and plans for himself and his children.
Fruit flies - help needed please.
Army horses loose on London streets
Have any of you got all electric cars? Pros and cons please.