Basis of Presentation	9 Months Ended
Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation. These consolidated financial statements include the accounts of Flexible Solutions International, Inc. (the “Company”), its wholly-owned subsidiaries Flexible Fermentation Ltd. (“Flexible Ltd.”), NanoChem Solutions Inc. (“NanoChem”), Flexible Solutions Ltd., Flexible Biomass LP, FS Biomass Inc., NCS Deferred Corp., Conserve H2O Ltd., Natural Chem SEZC Ltd., and InnFlex Holdings Inc., and its 65% interest in EnP Investments, LLC (“ENP Investments”). All inter-company balances and transactions have been eliminated. The Company was incorporated on May 12, 1998 in the State of Nevada and had no operations until June 30, 1998. In 2018, NanoChem, a wholly-owned subsidiary of the Company, completed the purchase of 65% of ownership interest in EnP Investments for an aggregate purchase price of $5,110,560. An unrelated party owns the remaining 35% ownership interest in EnP Investments, and EnP Investments is consolidated into the financial statements. The outside investor’s ownership interests in EnP Investments is recorded as a noncontrolling interest in the Company’s consolidated financial statements from the acquisition date onward. Flexible Solutions International, Inc. and its subsidiaries develop, manufacture and market specialty chemicals which slow the evaporation of water. One product, HEATSAVR®, is marketed for use in swimming pools and spas where its use, by slowing the evaporation of water, allows the water to retain a higher temperature for a longer period of time and thereby reduces the energy required to maintain the desired temperature of the water in the pool. Another product, WATERSAVR®, is marketed for water conservation in irrigation canals, aquaculture, and reservoirs where its use slows water loss due to evaporation. In addition to the water conservation products, the Company also manufactures and markets water-soluble chemicals utilizing thermal polyaspartate biopolymers (hereinafter referred to as “TPAs”), which are beta-proteins manufactured from the common biological amino acid, L-aspartic. TPAs can be formulated to prevent corrosion and scaling in water piping within the petroleum, chemical, utility and mining industries. TPAs are also used as proteins to enhance fertilizers in improving crop yields and can be used as additives for household laundry detergents, consumer care products and pesticides. These unaudited interim condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States for interim financial statements. These unaudited interim financial statements are condensed and do not include all disclosures required for annual financial statements. The organization and business of the Company, accounting policies followed by the Company and other information are contained in the notes to the Company’s audited consolidated financial statements filed as part of the Company’s December 31, 2018 Annual Report on Form 10-K/A. This quarterly report should be read in conjunction with such annual report. In the opinion of the Company’s management, these unaudited interim condensed consolidated financial statements reflect all adjustments, all of which are of normal recurring nature, necessary to present fairly the Company’s consolidated financial position at September 30, 2019, the consolidated results of operations for the three and nine months ended September 30, 2019 and 2018, the consolidated statements of cash flows for the nine months ended September 30, 2019 and 2018 and the consolidated statements of stockholders’ equity for the nine months ended September 30, 2019 and 2018. The results of operations for the three and nine months ended September 30, 2019 are not necessarily indicative of the results to be expected for the entire fiscal year.

Basis of Presentation

9 Months Ended

Sep. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Basis of Presentation.

These consolidated financial statements include the accounts of Flexible Solutions International, Inc. (the “Company”), its wholly-owned subsidiaries Flexible Fermentation Ltd. (“Flexible Ltd.”), NanoChem Solutions Inc. (“NanoChem”), Flexible Solutions Ltd., Flexible Biomass LP, FS Biomass Inc., NCS Deferred Corp., Conserve H2O Ltd., Natural Chem SEZC Ltd., and InnFlex Holdings Inc., and its 65% interest in EnP Investments, LLC (“ENP Investments”). All inter-company balances and transactions have been eliminated. The Company was incorporated on May 12, 1998 in the State of Nevada and had no operations until June 30, 1998.

In 2018, NanoChem, a wholly-owned subsidiary of the Company, completed the purchase of 65% of ownership interest in EnP Investments for an aggregate purchase price of $5,110,560. An unrelated party owns the remaining 35% ownership interest in EnP Investments, and EnP Investments is consolidated into the financial statements. The outside investor’s ownership interests in EnP Investments is recorded as a noncontrolling interest in the Company’s consolidated financial statements from the acquisition date onward.

Flexible Solutions International, Inc. and its subsidiaries develop, manufacture and market specialty chemicals which slow the evaporation of water. One product, HEATSAVR®, is marketed for use in swimming pools and spas where its use, by slowing the evaporation of water, allows the water to retain a higher temperature for a longer period of time and thereby reduces the energy required to maintain the desired temperature of the water in the pool. Another product, WATERSAVR®, is marketed for water conservation in irrigation canals, aquaculture, and reservoirs where its use slows water loss due to evaporation. In addition to the water conservation products, the Company also manufactures and markets water-soluble chemicals utilizing thermal polyaspartate biopolymers (hereinafter referred to as “TPAs”), which are beta-proteins manufactured from the common biological amino acid, L-aspartic. TPAs can be formulated to prevent corrosion and scaling in water piping within the petroleum, chemical, utility and mining industries. TPAs are also used as proteins to enhance fertilizers in improving crop yields and can be used as additives for household laundry detergents, consumer care products and pesticides.

These unaudited interim condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States for interim financial statements. These unaudited interim financial statements are condensed and do not include all disclosures required for annual financial statements. The organization and business of the Company, accounting policies followed by the Company and other information are contained in the notes to the Company’s audited consolidated financial statements filed as part of the Company’s December 31, 2018 Annual Report on Form 10-K/A. This quarterly report should be read in conjunction with such annual report.

In the opinion of the Company’s management, these unaudited interim condensed consolidated financial statements reflect all adjustments, all of which are of normal recurring nature, necessary to present fairly the Company’s consolidated financial position at September 30, 2019, the consolidated results of operations for the three and nine months ended September 30, 2019 and 2018, the consolidated statements of cash flows for the nine months ended September 30, 2019 and 2018 and the consolidated statements of stockholders’ equity for the nine months ended September 30, 2019 and 2018. The results of operations for the three and nine months ended September 30, 2019 are not necessarily indicative of the results to be expected for the entire fiscal year.