Consulting an attorney with experience in landlord tenant law is recommended when dealing with eviction, lease, or other rental issues. Laws concerning eviction and leases vary by state and are often subject to change. Generally, if a tenant has a rental lease, eviction laws state that a landlord cannot give a 30 day eviction notice until after the lease period is over, except in the case of nonpayment of rent or other lease violations. Having a lease agreement gives more protection against eviction than verbal agreements or month to month arrangements, though violating a lease may result in eviction. Lease violations can include unauthorized pets, illegal activity on the premises, unauthorized subleases, or even having junk cars in the yard. A rental lease agreement should outline what is allowed and what is not allowed in the terms of the lease, and signing the lease makes the tenant responsible for complying to the terms of the lease. If the terms are violated, a landlord may file an eviction action in court.