Aiyoh!! We had several experiences , the neighbour above smokes and throws the cigarette butts on to our air-con ledge, worst he throws on our laundry and once had burnt holes on to our expensive bedsheets.. Reported to the town council...stopped for a while and then it continued again...their maid also hangs super wet laundry which drips down onto our laundry...don't know what to do...town council/HDB useless
Why don't you sue your neighbours for damage of personal property in the case of burnt laundry? You'll, of course have to prove that it is them.