Insects: the good, the bad and the ugly. Insects can be good. Consider, for example, the pollinators that are responsible for assisting over 80% of the world's flowering plants. Without them, humans and wildlife wouldn't have much to eat or look at! Insects can also be problematic. They can devastate crops, injure humans and animals, and wreck havoc on homes. The links below will assist if you have an issue with insects or just want to learn more.