. >> charles annenberg weingarten -- clothianidin ivery toxic to bees. trillion is very toxic. in some cases it can kill them outright. in some cases, it can compromise their immune system, the navigation abilities, their memories. >> it is linked to disorientation, the inability of bees to communicate, the inability of queen bees to reproduce. >> it disrupts the delicate balance between the honey bee and its environment. they may fly out and die. they may fly out and not be able to find their way home again. >> this is colony class disorder at its core. neonicotinoids manufactured by the german chemical giants bayer are widely used in agriculture as well as home gardens. they are engineered to be easier to use than older generation pesticides, and they are also longer lasting and a thought to be less toxic to wildlife. some scientists say that neo nictinoids are more toxic to bees and the leader in soil and water for years. in 2009.e banned it it has also been banned in slovenia and italy. what we saw was a rebound of the bees in those countries. >> charles annenberg weingarte