The city is looking to put its rat problem on ice by testing some new techniques.

The Health Department is using dry ice to combat the rodent issue.

Workers are pumping dry ice into a burrow where rats live and covering the top with dirt. The dry ice takes the oxygen out of the space.

Officials say a six-month pilot program at Columbus Park in Chinatown has reduced the number of active rat burrows from 250 to one single hole.

"A burrow system may be two to three burrows. And if you close all those areas where they enter, where they escape, their secondary holes, in a very short amount of time, they just suffocate in the burrows, and that's it. You eliminate them," said Rick Simeone, director of pest control services for the New York City Department of Health.

Officials say blasting rat burrows with dry ice won't harm other wildlife or pets.

Plans are underway to expand the dry ice program to other chronically infested areas of the city.

Officials also say 25 solar trash bins in Columbus Park is also helping in the fight against rats since they're rodent-proof.