(KIRO via CNN NEWSOURCE) According to a probable cause affidavit, Ashlee Hutt and Leroy McIver were found living with their three children in a home filled with rat droppings, drug needles and heroin.

Investigators say someone in the home notified child protective services after seeing the 24-year-old Hutt inject her children, ages six, four and two with heroin.

"Some of the statements they made were very disturbing about how they would get sleeping juice to go to sleep and it was injected to them by needle," said PCSD Detective Ed Troyer.

The affidavit states the six-year-old, identified only as S.S., told CPS investigators his mom and dad gave him and his sisters the "feel good medicine" -- that he described as a white powder which was mixed with water and that his parents used a needle to inject the "feel good medicine" into him and his sisters.

S.S. Stated after that the three would go to sleep.

Testing showed traces of low levels of what was believed to be heroin in two of the children.

"Whoa, I didn't know that was going on over there, there's just been so many reports, it's hard to keep track of everything,” said neighbor Donald Tiedt.

Tiedt lives near the Spanaway home where Hutt was arrested after failing to show up to face charges in September.

He says sheriff's deputies come to the residence on a regular basis.

"Does it surprise you to hear a mom is accused of this? he was asked. "Yeah it does, especially since there are children living in that house," Tiedt said.

Hutt's children were taken away in November 2015 -- while CPS conducted its investigation.

"They're in foster homes and they're doing well," Troyer said.

Both Hutt and McIver face charges of supplying a controlled substance to a person under 18 -- child endangerment and child assault.

Both pleaded not guilty and remain behind bars in Tacoma.