Rat Radar is an independent, mobile-friendly service that helps people explore rodent reports and restaurant health inspection records across covered areas in the United States. It maps public 311 service requests about rat sightings, burrows, and nests alongside pest-related findings recorded by health inspectors at food establishments. Users can search for restaurants, review available inspection dates, and explore local guides to see reported activity by neighborhood, street, or block.

Rat Radar draws on records published by city governments and health departments, as well as community reports available through local reporting platforms. Its coverage and data freshness vary by location, and reports describe recorded complaints or inspection findings—not confirmed infestations or animal counts. The free plan offers a live rat map, basic restaurant information, and recent activity. Rat Premium, available for $19 per year, adds full violation details, available historical inspection records, and future premium features. Rat Radar also provides information about its data sources and methodology, a blog, frequently asked questions, and business and legal resources.