FLEXIBLE SOLUTIONS INTERNATIONAL INC

To the Stockholders and the Board of Directors of Flexible Solutions International, Inc.

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated financial statements of Flexible Solutions International, Inc. and its subsidiaries (the “Company”) which comprise the consolidated balance sheet as of December 31, 2023, and the related consolidated statement of income and comprehensive income, cash flows and stockholders’ equity for the year then ended, and the related notes (collectively referred to as the “consolidated financial statements”).

In our opinion, the consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company as of December 31, 2023, and the consolidated results of its operations and its consolidated cash flows for the year then ended, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audit, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audit included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audit provides a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of this critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Valuation ofinventory

At December 31, 2023, the Company’s inventory balance was $11,134,889. As discussed in Note 2 to the consolidated financial statements, the Company records inventory at the lower of cost on a first-in, first-out or weighted average basis and net realizable value. To determine inventory valuation, management conducts regular reviews of overhead costs and the calculation to allocate these expenditures to inventory cost.

We identified the assessment of valuation of inventory as a critical audit matter. Auditing management’s inventory valuation involved significant judgment because the estimates are based on several factors. In particular, in estimating inventory cost inputs, management developed assumptions such as the allocation of overhead expenditures to inventory cost.

The primary procedures we performed to address this critical audit matter included:

Chartered Professional Accountants

Vancouver, Canada

April 1,2024

We served as the Company’s auditor from 2019 to 2024.