New York trialing contraception method for rat control amid wildlife concerns

In April, Shaun Abreu, a New York City council member, emphasized that the city cannot simply poison its way out of the rat problem. Last week, the New York City Council voted to trial a new approach to reduce the rat population by implementing contraception. Special containers filled with the contraceptive ContraPest will be placed in two locations across the city for one year, with monthly checks on how much of the substance is consumed.

New York, home to over eight million residents, is facing the challenge of a rat population that may even surpass its human count. Concerns for other wildlife prompted the contraception proposal, particularly following the death of Flaco, a great horned owl that escaped from Central Park Zoo. Flaco was found dead with several rat poisons in his system, raising alarms about the impact of such poisons on other species.

Veterinarian Cecilie Mejdell, whose work focuses on animal welfare, stated that rat poison has been found in pets and wildlife in Norway, making it preferable to explore non-lethal methods for rat control. ContraPest is a plant-based, non-toxic contraceptive that hinders reproductive capabilities in rats, requiring regular replenishment.

New York’s mayor has declared war on rats, appointing a specific “general” for this initiative. Two neighborhoods heavily infested with rats will be part of the trial, with a third designated as a control area. The city plans to stop using garbage bags and return to covered bins to limit the food sources available to rats, starting November 12.

Similar challenges persist in Norwegian cities like Oslo and Bergen, where high rat populations have raised concerns about public health and safety. Though ContraPest is not yet approved in Norway, it has garnered interest for its humane approach to pest control.