Essential oil sprays kill cockroaches on contact but offer little lasting control

A German cockroach races across a kitchen floor. Someone grabs a bottle of essential oil spray, soaks the insect and watches it die. The product worked, but a new University of Kentucky study suggests the larger infestation probably did not notice. This story matters for Science & Discovery readers tracking insect. Reported by phys.org. Read the full original at the source link below.