In a rental situation, basic tenant privacy is generally ensured under the law. Specific states may have their own laws and guidelines regarding the particular rules regarding tenant privacy, and some locations may have more detailed laws than others. In most situations, a landlord may not enter a tenant's rental space without giving proper notice in advance; proper legal notice varies, but is usually at least twenty four hours or more. The requirement of advance notice is generally not required in emergency situations, such as a flood or fire. A tenant usually has the right to reasonably deny a landlord entry, though a tenant does not have the right to willfully interfere with a landlord's ability to perform necessary maintenance. Tenant privacy does not apply to illegal criminal activity in the rental unit, and a landlord may legally evict a tenant for engaging in illegal acts in a rental property.