Today, handguns are used in 51 percent of all murders committed in the United States. Knives were used in 20 percent of all murders, shotguns in 8 percent, and personal weapons such as rocks and bottles in 9 percent. Six percent of murders were committed by miscellaneous methods, and another 6 percent by poisoning. This, however, may be a deceptive statistic, as it is estimated that 64 percent of all murders by poisoning go undetected.