A woman is gaining massive attention online for confessing that she has never washed her bedding and that her mattress is around '100 years old.'

Cornelia Bayley appears on an episode of Channel 4's Obsessive Compulsive Cleaners, a TV show that features people with a passion for cleaning up the dirtiest and filthiest homes in Britain.

The show's cleaners have encountered some tough tasks in the past, but nothing could have prepared them for what they would encounter at Bayley's place.

See the cleaners' visit to her home in the clip below…

During the episode, the retired antique dealer, who was approximately 74 years old when it aired, admitted that maintaining her 10-bedroom Grade I-listed 17th-century manor in north Wales was a challenge.

Understandably, it's not easy to keep such a large home spotless, but Bayley's shocking confession left the cleaners, Hayley and Dan, speechless.

When shown one of the bedrooms, Hayley asks the homeowner, "Cornelia, when was the bedding last washed?"

Bayley responds, "Never."

Surprised, Hayley asks, "It's never been washed? What about the mattress? Do you clean the mattresses?"

Dan chimes in, asking, "How old is the mattress?" Bayley replies, "It could be 100 years old, or something. You know, this is how people used to live years ago – and I still live like that."

Later in the episode, when Hayley and Dan begin cleaning the home, Bayley lays down one condition.

They are not allowed to use any cleaning products; instead, they must use only water and a sponge.

Following Bayley's statement, Hayley inquires, "It doesn't kill bacteria then, does it?"

The homeowner replies, "The bacteria can live here, I couldn't care less."

After cleaning the property, Hayley went on YouTube to share her thoughts on the challenging task, admitting that she had a "bit of a breakdown."

"That was the first hurdle for me, and instantly I was like, 'This is going to go downhill very, very quickly'," she shared.

"Because I was thinking in my mind things like, 'How am I gonna get these toilets clean? What am I gonna use to clean the sink drains and put down the drains and stuff?'."

Despite not meeting Hayley's usual standards, Bayley expressed to the pair that she was ultimately 'happy' with their hard work.

Plas Teg, Bayley's property, is currently closed to the public as it undergoes structural repairs.