This critter cologne could solve the city’s rat problem.

Problem is, it could also create a cat problem.

Researchers at Fordham University studying a colony of rats at a Brooklyn recycling center found rodents flock to areas rich in female-rat pheromones, but ignore areas where the scent of male rats predominate.

The rodents visited the female-scented area an average of five times per day, compared to less than one daily visit to areas exuding male pheromones, according to excerpts from the study published in the Journal of Urban Ecology.

One of the rodents — a female named Molly — was attracted to both female and male rat pheromones, according to the Fordham Observer.

She exhibited “exaggerated behavior” and scurried in circles, the student paper reported.

The study areas began attracting cats, and five strays began stalking the rodents, but cameras captured only two kills in five months.