Wash. Rev. Code § 19.86.020 : — BUSINESS REGULATIONS-MISCELLANEOUSUNFAIR BUSINESS PRACTICES-CONSUMER PROTECTION — Unfair competition, practices, declared unlawful TEXT PDF Unfair methods of competition and unfair or deceptive acts or practices in the conduct of any trade or commerce are hereby declared unlawful. RCW 19.86.020 1961 c 216 § 2. Hearing instrument dispensing, advertising, etc.-Application: RCW 18.35.180.