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Warrants (Tables)
12 Months Ended
Jul. 31, 2020
Warrants  
Summary of warrants activity
    Number of Warrants     Weighted Average Exercise Price     Weighted Average Remaining Contract Term  
Exercisable at July 31, 2018     2,015,000     $ 0.15       1.47  
Granted     500,000       0.15       1.28  
Expired     (150,000 )     0.15       -  
Exercised     -       -       -  
Exercisable at July 31, 2019     2,365,000       0.15       .65  
Granted     -       -       -  
Expired     (1,865,000 )     0.15       -  
Exercised     -       -       -  
Exercisable at July 31, 2020     500,000     $ 0.15       .27