You should tell them that you believe that littering the surroundings of your house is a cause of concern for you, it might also lead to infections and other diseases in particular. You should also tell them how this is an offence under Section 268 of the Indian Penal Code, which can result in them getting fined under Section 290. While the fine appears miniscule, this being a criminal offence, would be detrimental for their reputation. I would suggest you should use this as a mere bargaining tactics in getting them to stop creating this nuisance.
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