drive the neighborhood at night to see if undesirables ..do it for 4 nights weekends too..low income neighorhoods have much higher crime..those people have nothing to lose from crime..video the ap with witnesses before signing lease..vedio apt when move out inspection is ging on..landlords protect thierself, you must protect your self..keep the place up and pay rent on time..landlords now report to bad tennant list nationwide.......next landlord will know if you did not pay rent on time and if you busted up the place or left it fifthy