An Australian shopper has been left stunned after discovering a pile of thick white dust under her Kmart rug.
She shared a picture of her shocking find to a Facebook group, telling the members: “I had no idea … that was under it when I lifted it up”.
“I use a Dyson on it everyday!!! When I first laid it out I had a little white dust come out and thought it’s probably from the warehouse or whatever. Not loving my 11 month old crawling all over it. In the bin it goes.”
Trends, culture and exclusive features: Sign up for 7LIFE newsletters 
Many others were confused by the pile of dust.
A number of social media users joked that it could it be something sinister.
“Reminds me of the Border Security show,” one wrote.
“Looks like someone tried to smuggle a little cocaine in your rug,” another wrote.
However, some believed it was harmless.
“Just the latex glue breaking down in the rug, it’s fine unless you have latex allergies,” one wrote.
A Kmart spokesperson said the dust was calcium carbonate; a substance used in production as a bulking agent.
Calcium carbonate is essentially a solution which is added to latex to improve stability.
She said the rug features no safety risk in fact.
“In saying this, this should not occur and as a business we have discontinued use since December last year, which means customers should start to see the new styles in store and online now.
“We welcome customers to contact our customer service team for further information.“