Residents in parts of North Yorkshire are being warned of an increase in the local rat population.
Mild winters have helped to extend the rats' breeding cycle
Ryedale District Council said it was receiving an average of 10 complaints a day about the rodents, which is a 25% increase on the same time last year.
Mild winters, the cost of rat bait and wetter weather forcing the rats to seek shelter in people's homes are among the reasons for their swelling population.
People are advised to take more care to prevent the rats entering their homes.
Environmental health manager Steven Richmond said residents should check outside their homes and fill any gaps around pipes going into the walls and cut back climbing plants so they are well below the level of the gutters.
Earlier in the year, a survey by the National Pest Technicians Association found Yorkshire to be one of the worst places in the United Kingdom for rat infestation.
Nationally, it said only Wales had more of the rodents than Yorkshire.