Yes -- There are hand-soaps for children -- that warn you to "keep out of reach of children."
How does that make sense? If you notice, a lot of hair care products (shampoo and cond) also say keep away from children.
I think some are - I also think that some "natural" cleaners can be harmful as well. Most houeshold chemicals on the market today can be safely used in moderation; the problem is that people over use them.