I disagree. Many things in the home are potentially lethal if used contrary to the instructions on the packet - knives, power drills, drain-cleaner to name but a few - but they are also very useful. The key is not to remove them from the house altogether, but to teach children from an early age to treat these things with the necessary respect, be aware of the damage they can do, and basically, not be an arse. Perhaps a little bit of it is that we are faced with so many blindingly obvious warnings - "Caution, water from the hot tap may be hot" and so on - that it's hard to tell what is a genuine serious and important warning, and what is merely the manufacturer's legal team trying to cover every tiny angle.