Rat infestations surge in Odsherred as reports triple in two years

Rat sighting reports in Odsherred Municipality have surged by over 200% in just two years, rising from 940 in 2023 to 2,838 in 2025, according to figures reported by Danish broadcaster DR.

Else Andersen, head of the nature and environment department responsible for rat control in Odsherred, attributes the increase to climate change, citing mild winters and wet summers that force rats out of sewers and drainage systems and toward residential areas. Warmer winters also improve their survival rates.

Nationwide, nearly 200,000 rat reports near residential properties were recorded last year, according to data from the Danish Environmental Protection Agency.

Andersen emphasizes that rats pose a serious health risk as carriers of diseases that can severely affect humans. She advises homeowners to watch for early signs such as noises in walls or droppings. Preventative measures include sealing sewers and homes, removing fallen fruit, clearing debris near buildings, and ensuring chicken coops are rat-proof.

Reporting rat sightings to the municipality is mandatory by law and can be done digitally at www.borger.dk.

Jan Graversgaard, Vice President for Building and Housing at insurance company Alm. Brand, warns that rat damage to sewer pipes, electrical installations, and insulation can be costly. Many homeowners are unaware that standard home insurance often does not cover rat damage, requiring extended coverage.