What is the definition of a pesticide?

A pesticide is defined as any material used to manage pests through various means, which encompasses a range of activities including prevention, control, or mitigation of pest populations. This definition is broad, allowing for the inclusion of substances that may not only kill pests but also deter, repel, or otherwise disrupt pest behavior or lifecycle. The focus of this definition highlights the function of the material rather than its method of action, which can vary significantly based on the specific product and the pests being targeted.

Other options do not capture the complete definition of a pesticide. For instance, just being a legal substance used for gardening does not inherently relate to pest management practices. Additionally, a material solely for attracting pests does not align with the purpose of pesticides, which is to manage pest populations, not simply attract them. Lastly, while some pesticides may kill pests, the category also includes materials that manage pests through other methods, thus "only products that kill pests" is too narrow of a definition to fully encompass the variety of pesticide products available. Through this comprehensive understanding, it becomes clear that the term "pesticide" is broader than just a tool of extermination; it plays a vital role in integrated pest management strategies.