Why we should have to keep our garbage in different dust bins? Why we should not keep in the same garbage and the sweepers will separate it?

We should separate our garbage in different dustbins because it is easier to separate and throw than to separate it afterwards. The risk of infection also decreases considerably if you separate the garbage before throwing.

For example, if you throw broken glass and food particles into the same dustbin, then a sweeper may not know there are broken pieces of glass in the garbage and may hurt himself.

Moreover, sweepers are there to sweep the floor. His work does not include to separate your garbage.