People that live in slums are showing how they attempt to clean.
Mensen die in sloppenwijken wonen laten zien hoe ze proberen schoon te maken.
Some people are trying to wash their residence.
Sommige mensen willen hun huis wassen.
People live in a residence, and "trying to wash" is the same as to "attempt to clean"
Mensen wonen in een residentie, en "proberen zich te wassen" is hetzelfde als "op te ruimen"