Insecticides may contribute to bigger problems with certain weeds

Cockroaches Develop Resistance To Insecticides! Cockroaches are some of the most reviled insects in the home. That’s because they carry diseases everywhere they go, and when they get on your food, you might as well throw it away.

Insecticides contributed to loss of butterflies across American MidWest - EurekAlert

Butterflies Are in Decline. New Research Points to Insecticides.