A Deer Park home believed to be a breeding ground for a rat problem that has infested a Conklin Street neighborhood has been put up for sale, while an exterminator spent the weekend battling the rodents.

Suburban Exterminating, based in Smithtown, worked at the home Friday afternoon and evening, the company’s technical director, Lynn Frank, said on Saturday.

Frank said the company was retained by an individual who knows the homeowner, whom he declined to name, and the Suffolk County Department of Health Services.

“We’re working together with the Board of Health and another entity toward a solution,” he said. “We’re going to be involved for at least a week or two and we will be following up.”

Frank said he was not at liberty to disclose what work took place on Friday because he had not received permission from his client to do so. The company is performing the work pro bono, he said.

Neighbors have said the homeowner is a woman in her late 60s who lives alone and has been hoarding food and newspapers both inside and outside the house.

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They said they have shelled out hundreds of dollars on poisons and traps to no avail, as rats have been continuously spotted scurrying from the house onto the lawns of neighboring homes.

Babylon Town spokesman Brendan Cunningham said in an email Saturday that town officials were pleased the issue was being handled expeditiously.

“The Town of Babylon is committed to maintaining a high quality of life for our residents, and we are happy that this situation is quickly being addressed,” he said. “To ensure that the extermination process is satisfactory, a town inspector will survey the property again on Monday.”

Town and county health services employees had “found fresh rat droppings” during a visit to the home Friday, Cunningham said earlier.

Meanwhile, listings for the home, which began to appear online Friday, describe it as a 2-bedroom ranch built in 1960, with a selling price of $100,000.

Some listings also specify the home’s condition, saying: “This Home Is Being Sold As Is, All Cash, With All The Contains Inside, Hoarders Home! And Rodents In The Home. Investors Only!!”

Tom Zeblisky, who has lived on Conklin Street for 23 years, said Saturday that he saw the exterminators arrive at the home on Friday afternoon carrying what appeared to be bait stations.

“I don’t know if it did any good,” he said when asked if he noticed an immediate difference.

But Zeblisky said he was “very happy” to hear that exterminators were working toward a solution.

“I hope that this whole thing gets resolved soon,” he said.