Significant Accounting Policies (Tables)

3 Months Ended

Oct. 31, 2022

Accounting Policies [Abstract]

Summary of Revenue by Product

A summary of our revenue by product type for the three months ended October 31, 2022 and 2021 is as follows:

	October 31,
	2022		2021
PURE Hard Surface	$	446,000	$	444,000
SILVÉRION		21,000		53,000
	$	467,000	$	497,000

Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share

	October 31,
	2022		2021
Common stock option		8,014,125		7,214,125
Restricted stock units		1,212,500		1,362,500
Warrants		—		327,765
Total		9,226,625		8,904,390

Schedule of Inventories

Inventories consist of the following:

	October 31, 2022		July 31, 2022
Raw materials	$	21,000	$	19,000
Finished goods		218,000		160,000
	$	239,000	$	179,000