@Samantha Soto the smoke alarm tampering tenant has to either desist this practice or pack his bags and go. There is no middle way here. @Thomas S. is right on this one, your liability as a landlord is real in this case. If there were to be a fire and it was discovered that you knew that the tenant was in the habit of tampering with smoke alarms and that your response was inadequate you could be prosecuted, fined, sued, jailed, the list is endless. My first action would be to immedately install sealed ten year lithium battery smoke alarms throughout the property and institute a frequent inspection program to ensure that they are not interfered with. At the first sign that they are I would issue the relevant legal notice to cure, and immediately fix the tampering. I would continue in this manner until the tenant either got the message and complied totally or until the tenant was evicted.
I would also review and inspect the condition of all smoke alarms in the rest of the property and consider replacement with sealed ten year lithium battery models there also. It sounds as though fire safety was not top of mind for the previous owner. This is a serious concern for you as landlord and is literally a life or death matter. All of these are urgent items - many residential fires occur around the holidays. I would get a handyman in there with a cordless drill installing new alarms ASAP. Here in Ontario fines for missing alarms vary by locality but from the newsfeeds I monitor if a fire department finds a landlord with a missing smoke alarm or a dead battery fines levied can be $3,000 or so per alarm per instance. I do not know what the situation is in Indiana but I suspect the authorities do not smile on negligent landlords especially if negligence is revealed in an actual fire with damages, injury or even death.