Kids are putting Drano, aluminum, and a little water in soda bottles and capping it up and leaving them on lawns. When a person picks up the trash, and the bottle is shaken just a little, in about 30 seconds or less it builds up a gas and explodes with enough force to remove some of one's extremities. The liquid that comes out is boiling hot as well.
Don't pick up any plastic bottles that may be lying in your yards or in the gutter, etc. Pay attention to this. A plastic bottle with a cap. A little Drano. A little water. A small piece of aluminum. Disturb it by moving it; and BOOM! No fingers left and other serious damage to your face, eyes, etc.
People are finding these "bombs" in mailboxes and in their yards, just waiting for one to pick it up intending to put it in the trash. It takes about 30 seconds to blow after the bomb is moved.