Washington Pesticide Laws and Safety Practice Test 2026 - Free Pesticide Laws Practice Questions and Safety Study Guide

To sell a restricted use insecticide, dealers must verify the buyer's certification and licensing for the intended use. This is because restricted use insecticides can be harmful if not handled properly, and it is necessary for the buyer to have the proper training and qualifications to safely use the product. None of the other options - the buyer's age, residential address, or credit score - are relevant or necessary for dealers to verify in this situation.