Hospitals in the United Kingdom have documented several children with severe burns after playing with trending squishy toys.
Some of the toys detonated when people put them in a microwavable oven, causing burns and exposing kids to unknown chemicals.
Doctors say the injuries stem from toxic substances in the soft polymer available on the internet.
Trading Standards officers in Gloucestershire have taken almost 2,000 the toys within a nationwide crackdown.
The seizure follows calls from councils and consumer groups to halt sales.
Authorities urge parents to throw away any squishy toy that has been heated or shows signs of chemical leakage.