Fears a new breed of 'super rodents' could be a 'threat to humans'
![Fears a new breed of 'super rodents' could be a 'threat to humans'](https://i2-prod.edinburghlive.co.uk/incoming/article25923923.ece/ALTERNATES/s615/1_Rats.jpg)
Nearly all rats and mice in the UK have become resistant to a common type of poison used to control the population over the last 20 years
Nearly all rats and mice in the UK have become resistant to a common type of poison used to control the population over the last 20 years