Consolidated Statements of Operations - USD ($)	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Total revenue	$ 1,853,000	$ 3,927,000
Cost of goods sold	853,000	1,852,000
Gross Profit	1,000,000	2,075,000
Operating costs and expenses
Selling, general and administrative	4,106,000	4,047,000
Research and development	319,000	339,000
Impairment of intangibles	299,000
Total operating costs and expenses	4,724,000	4,386,000
Loss from operations	(3,724,000)	(2,311,000)
Other income (expense)
Interest expense, net	(6,000)	(4,000)
Other income (expense), net		(4,000)
Gain on extinguishment of indebtedness, net	239,000
Total other income (expense)	233,000	(8,000)
Net loss	$ (3,491,000)	$ (2,319,000)
Basic and diluted net loss per share	$ (0.04)	$ (0.03)
Shares used in computing basic and diluted net loss per share	88,835,424	87,174,312
Product [Member]
Total revenue	$ 1,813,000	$ 3,698,000
Royalty [Member]
Total revenue	$ 40,000	$ 229,000