A nuisance is a condition or use of property that interferes with adjoining landowners’ (neighbors) use and enjoyment of their properties; or endangers the life, health, enjoyment, or safety of others; or is offensive to others. Loud noises, foul odors, unsightly conditions, and illegal or immoral activities (such as prostitution or illegal drug activity) on a property are common examples of nuisances.

Trash, litter, uncut grass or vegetation, untrimmed trees, graffiti, and abandoned motor vehicles and tires are also common subjects of nuisance abatement efforts—often undertaken by a city or town’s code compliance or code enforcement department or division.

Abatement is generally the act of stopping, eliminating, or nullifying some condition or activity. Nuisance abatement or abatement of a nuisance generally includes stopping or eliminating a noise, odor, unsightly condition, or other nuisance—or repairing or demolishing a home, apartment complex, or other building the owner has failed to maintain and that endangers the life, health, safety, or life enjoyment of persons in the neighborhood.

State laws (statutes) often provide local governments with certain nuisance abatement powers to compel the owner of a property to fix or remedy the conditions creating a nuisance—and if the owner fails to do so, the local government may do so, such as by demolishing or razing a building.

Under some circumstances the local government may choose to repair or rehabilitate the nuisance condition—or remove, remediate, transport, and dispose of materials or property on the premises that are creating the nuisance.

Local governments may also have the right to prohibit access to the premises by some or all persons, and to control access to the premises.

In Wyoming, nuisance is defined as any activity or condition on a property that interferes with neighbors' use and enjoyment of their property, poses a danger to life, health, or safety, or is offensive to others. Examples include loud noises, foul odors, unsightly conditions, and illegal activities. Common nuisances also encompass environmental degradation such as litter, overgrown vegetation, and abandoned vehicles. Local governments in Wyoming are empowered by state statutes to address nuisances through abatement efforts. This means they can require property owners to correct the conditions causing the nuisance. If the owner fails to comply, the local government may intervene directly, which could involve repairing, demolishing, or cleaning up the property. Additionally, local authorities may restrict access to the premises to prevent further nuisance. The specific procedures and powers available to local governments for nuisance abatement are typically outlined in municipal codes and ordinances, which can vary from one locality to another within the state.