Compare and contrast solid wastes and hazardous wastes.

• A. Solid wastes can be solid, liquid or contained gas; solid waste is anything not considered hazardous waste; hazardous waste is the pest itself if determined as such by the SDS.
• B. Hazardous waste is always non-pesticide.
• C. Solid waste is the same as hazardous waste.
• D. Hazardous waste never includes pesticide residues.

Answer: (A)

The main idea here is how wastes are classified by risk and regulatory rules. Solid waste is the broad category for discarded materials that aren’t treated as hazardous waste. It can come in different forms you might encounter when disposing of pesticides or related materials—sometimes it's a solid, sometimes what you’re discarding is a liquid or a contained gas inside a vessel, as long as the material is being discarded and not treated as hazardous waste. In everyday practice, this includes items like emptied, rinsed containers, used PPE, or soil and rags that don’t meet hazardous criteria.

Hazardous waste is a narrower category defined by regulatory criteria. Wastes that exhibit certain dangerous properties—ignitability, corrosivity, reactivity, or toxicity—or wastes that appear on regulatory lists are treated as hazardous waste. When a pesticide product or its residues are designated as hazardous under these rules, the discarded material that contains that product is managed as hazardous waste. The SDS helps you understand the hazards of the product and informs handling and disposal, but the waste’s classification as hazardous depends on the regulatory criteria for waste, not solely on the product’s label.

So, solid waste covers a wide range of discarded materials that aren’t hazardous waste, while hazardous waste has stricter criteria and requires special disposal. Some items may be non-hazardous even if they contain pesticide residues under certain conditions, and some wastes that aren’t obviously dangerous products can still become hazardous waste when discarded if they meet the regulatory standards.