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Exhibit 32(a)

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Steven A. Brass, Chief Executive Officer of WD-40 Company (the “Company”), have reviewed the Annual Report on Form 10-K of the Company for the fiscal year ended August 31, 2025 (the “Report”). For purposes of Section 1350 of Title 18, United States Code, I certify that to the best of my knowledge:

(1)the Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: October 27, 2025
			/s/ STEVEN A. BRASS
			Steven A. Brass President and Chief Executive Officer