No, boric acid can still be very dangerous to humans, animals, and children. It may requires a lot of it for a lethal dose, but there are also several side effects of exposure to boric acid. Many of the insecticides that contain boric acid will contain a sweetener, such as sugar, to attract insects.
Within a water molecule is covalent bonds. between water molecules are hydrogen bonds.
Cohesive forces between water molecules are the result of the polar nature of water molecules. Most of the water molecules in the liquid form of water are covalently bonded to four other water molecules that surround them. However the molecules on the surface of water cannot form bonds to four other molecules.