Note 9 - Accrued Liabilities - Schedule of Accrued Liabilities (Details) - USD ($)	Jun. 30, 2020	Jun. 30, 2019
Cooperative advertising and promotion allowances	$ 158,770	$ 188,985
Customer credit balances	16,363	65,937
Current deferred compensation	150,000	150,000
Employee benefits	80,399	60,178
Legal and professional fees	68,200	65,914
Bonus and profit-sharing	8,098	18,694
Sales commissions and bonuses	53,647	51,026
Other	44,622	49,779
Total accrued liabilities	$ 580,099	$ 650,513	[1]

[1] Excludes approximately 2,786,225 and 2,523,513 stock options for the years ended June 30, 2020 and 2019, respectively, as the impact of such awards was anti-dilutive.