One of the factors in the disappearance of honeybees — a group of pesticides known as
neonicotinoids. These pesticides are present in commonly used home gardening products and are regularly sprayed on millions of acres of corn, soy, wheat and cotton seeds in the United States alone. Scientific reports say the insecticides act as a nerve poison, infecting the pollen and nectar of plants, disorienting the bees and making it
impossible for them to find their way back to their hives.
In April, 2015, the Portland City Commission voted unanimously to immediately suspend use of products that contain neonicotinoids, making Portland the second largest city in the U.S. (after Seattle) to ban the use of neonicotinoids on public lands.