Significant Accounting Policies (Tables)

3 Months Ended

Oct. 31, 2021

Accounting Policies [Abstract]

Summary of Revenue by Product

A summary of our revenue by product type for the three months ended October 31, 2021 and 2020 is as follows:

	October 31,
	2021		2020
PURE Hard Surface	$	444,000	$	1,379,000
SILVÉRION		53,000		38,000
	$	497,000	$	1,417,000

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

	October 31,
	2021		2020
Common stock option		7,214,125		9,432,875
Restricted stock units		1,362,500		2,012,500
Warrants		327,765		327,765
Total		8,904,390		11,773,140

Schedule of Inventories

Inventories consist of the following:

	October 31, 2021		July 31, 2021
Raw materials	$	17,000	$	17,000
Finished goods		295,000		315,000
	$	312,000	$	332,000