Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Total revenue	$ 722,000	$ 471,000
Cost of goods sold	280,000	214,000
Gross Profit	442,000	257,000
Operating costs and expenses
Selling, general and administrative	1,073,000	1,165,000
Research and development	80,000	78,000
Total operating costs and expenses	1,153,000	1,243,000
Loss from operations	(711,000)	(986,000)
Other income (expense)
Other income (expense), net		(5,000)
Interest expense, net	(24,000)	(2,000)
Total other income (expense)	(24,000)	(7,000)
Net loss	$ (735,000)	$ (993,000)
Basic net loss per share	$ (0.01)	$ (0.01)
Diluted net loss per share	$ (0.01)	$ (0.01)
Shares used in computing basic net loss per share	111,856,473	111,356,473
Shares used in computing diluted net loss per share	111,856,473	111,356,473
Product [Member]
Total revenue	$ 718,000	$ 467,000
Royalty [Member]
Total revenue	$ 4,000	$ 4,000