What bugies can't eat?

Bugs, or insects, cannot eat certain substances that are toxic or harmful to them. For example, many insects are unable to digest cellulose, which is found in plant cell walls, limiting their ability to consume certain types of vegetation. Additionally, some insects are sensitive to pesticides and other chemicals, which can be lethal even in small amounts. In general, each insect species has specific dietary restrictions based on its physiology and ecological niche.