Note 9 - Stock-based Awards: Share-based Compensation, Stock Options, Activity (Details) - $ / shares	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2017
Details
Outstanding	7,772,500	5,400,000	3,280,000
Weighted Average Exercise Price, Outstanding	$ 0.17	$ 0.16	$ 0.26
Granted	3,885,000	2,550,000
Weighted Average Exercise Price, Granted	$ 0.12	$ 0.08
Expired		(430,000)
Weighted Average Exercise Price, Expired	$ (0.43)	$ (0.43)
Terminated	(950,000)
Weighted average fair value of options granted	$ 0.12
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	3 years 4 months 2 days
Intrinsic value of options outstanding and exercisable	$ 165,000
Intrinsic value of options outstanding and exercisable	$ 165,000

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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The grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of shares (or other type of equity) forfeited during the period.

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