Parents should be aware that some children's mucus products may contain higher levels than the recommended levels for a chemical, a consumer watchdog has said.
Which? Parents should be able to buy toys without fear of harming their children.
The consumer organization called for "fundamental changes" in the product safety system after it was determined that some products had higher than recommended boron levels.
Mucous and mucous products are becoming increasingly popular with adolescents.
Compounds of boron can be used in eye drops, mild antiseptics and washing powders.
Which? Boron is contained in borax, a common ingredient in mucus that helps to create their "stickiness".
A European Union safety directive specifies how liquid or sticky toys should not contain more than 300 mg / kg of boron.
The consumer champion wanted to find out if the mucous products of some children contained the recommended limits.
It found that eight out of 11 toy sludge products tested exceeded the limit.
Which? said Toysmith Jupiter Juice had more than four times the allowable amount of boron at 1,400 mg / kg.
This was followed by CCINEE Pink Fluffy Slime, which was found to contain 1,000 mg / kg, and Cosoro Dodolu Crystal Slime Magic Clay, which was found to be 980 mg / kg, what? added.
It was said that all eight products that failed have been bought on Amazon.
A product bought on the online marketplace Hulk Green Halloween Slime met the standard.
Products that do not meet the standard have been removed from the Amazon website.
A spokesperson for the company said, "All marketplace sellers must follow our sales guidelines, and those who do not will be taken action, including the removal of their accounts." The products in question are no longer available. "
Slime from the retail chains "The Works" and "Smyths" that were tested also met the standard.
Which? The Federal Environment Agency has announced that it will pass on its findings to the Office for Product Safety and Health. Englisch: www.bmeia.gv.at / en / foreign – ministry … – europe.html
It also warned that parents who make home-made slime should be careful when considering this option.
Some reports indicate that adolescents have sustained injuries after trying to replicate mucus recipes found online.
Nikki Stopford, Research and Publishing Director at Which ?, said, "If you have school-age children, you're probably well aware of the latest gum craze in the playgrounds – kids love it.
"Parents who buy mucus for their children should be aware that these toys are safe, so they will be shocked to find that their babies' health could be endangered by the mud.
"The product safety system has to be fundamentally changed.
"Manufacturers need to stop making unsafe products, and the government and retailers simply have to do much better work to get everything that is perceived as risk out of the shelves and out of people's homes."
A spokesperson for the Department of Enterprise, Energy and Industrial Policy said, "The government's top priority is to keep people safe, so goods sold in the UK must meet some of the world's toughest security laws.
"The evidence of which? Will be reviewed by the Office of Product Safety and Standards and (may) take appropriate action."