A new cleaning hack has left one mother embarrassed at how dirty her duvets are despite cleaning them regularly.
New South Wales mum Sara recently shared pictures to Mums Who Clean Facebook group exposing the dirt in duvets washing machines don't pick up.
Sara, who did not want her last name shared, said she found the "strip wash" hack online where you soak your duvet in boiling hot water with detergent for several hours.
News.com.au reported she shared before, during and after videos to the page.
"I’m totally grossed out but have to share," she wrote.
"I decided to strip soak/wash…my doona. Yes, I regularly wash it and I’m shocked at how dirty it was.
"The fact I sleep under it has totally made me sick…I didn’t want to post but my sister Kirsty told me to."
The shocking "after" photo showed her bath as the water started to drain, leaving dirt stuck around the inside of the bath.
“I usually wash my doona in the machine about once a month, so decided to try this method this month.”
“Within half an hour of it soaking I could see how dirty the water was and I was horrified and embarrassed. It was really gross.”
Some of the group's 218,000 members shared their shock at the dirt coming from a "clean" duvet.
One member commented "I'm cringing because I haven’t washed mine" news.com.au reported.
“It’s shocking how much dirt still comes out after it gets washed,” another mum said.
Other users described the photos as "satisfying".
“Bet you feel better knowing it’s clean now.”
“It’s so satisfying seeing the dirt come out,” another wrote.
Sara told The Mirror she felt better after posting it because other members said they had had the same thing happen. She was initially apprehensive about posting it and told commenters to "Please be Nice".