Will the landlord really check the tenant`s cleaning and suction activity? This would be very difficult without incurling significant costs for the landlord or violating the tenant`s right to enjoy quietly. Below are some examples of clauses that would not be applicable. Landlords want their tenants to take care of the property, so it`s tempting to include clauses requiring tenants to perform certain tasks for the duration of the lease or prohibiting certain activities. You cannot write clauses in leases that are contrary to the law. The rental court may consider these clauses to be unenforceable – meaning that they have no effect and that, in some cases, these clauses may constitute an illegal act. .