article here.
Linked in case there are other peole who are unaware of their dangers: there has been a spate of admissions to hospital for toddlers with various very serious injuries. The contents of the tab are alkali and strong enough to cause burns/swelling to eyes if spattered and thread (leading to need to ventilate).
These injuries typically follow small children getting hold of the tabs and playing with them leading to their splitting.
The packaging, according to the article, does not have safety warnings. But they need to be kept out of the reach of children at all times.