we always tell my nehews and my daughter how to behave at someone else’s place. i feel very bad even if our kids talk in high voice to others.
i have seen many desis looking while their kids practically destroy everything.
once this kid started throwing bricks at neighbours house, his mum didnt even bother to look at wat he was doing…this was at our house.
another kid spitted in chutny, his mum mixed it up. (i was looking at; at someone’s house we went to).
kids aside, many adults do the same things.
this guy cleaned blood of his hand with our new suede lounge. 
another gentleman had applied mustard oil to his hair, and that was rubbed to our sofa and the stain is still there.