Children caused landlords headache. Fearing street violence, many parents in crime-ridden neighborhoods kept their children locked inside. Children cooped up in small apartments used the curtains for superhero capes; flushed toys down the toilet; and drove up the water bill. They could test positive for lead poisoning, which could bring a pricey abatement order. They could come under the supervision of Child Protective Services, whose caseworkers inspected families’ apartments for unsanitary or dangerous code violations. Teenagers could attract the attention of the police.