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Note 5 - Related Party Transactions/Activity (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Jun. 01, 2023
Aug. 01, 2022
Jan. 01, 2017
Feb. 28, 2025
Feb. 29, 2024
Feb. 28, 2025
Feb. 29, 2024
May 31, 2024
TriEnda Holdings LLC [Member]                
Related Party Transaction, Purchases from Related Party           $ 87,634 $ 7,516  
Related Party Transaction, Purchases from Related Party $ 150,389         446,814    
Yorktown [Member] | Grinding and Pelletizing Equipment [Member]                
Weekly Rental Expenses       $ 27,500        
Operating Lease, Expense       1,072,500 $ 1,072,500      
Yorktown [Member] | Office Space Lease [Member]                
Operating Lease, Expense       62,500 $ 55,200      
Monthly Rental Expense, Renewal     $ 6,250          
Lessee, Operating Lease, Term of Contract     6 years          
Greystone Real Estate L L C [Member]                
Operating Lease, Expense           400,500 400,500  
Greystone Real Estate L L C [Member] | Manufacturing Facilities Lease [Member]                
Lessee, Operating Lease, Term of Contract   10 years            
Lessee, Operating Lease, Renewal Term   5 years            
Monthly Rent Expense   $ 44,500            
Monthly Rent Expense, Monthly Increase Every Fifth Year, Percent   5.00%            
TriEnda Holdings LLC [Member]                
Accounts Receivable, after Allowance for Credit Loss       567,158   567,158   $ 143,290
Accounts Payable       44,974   44,974   0
Green Plastic Pallets [Member]                
Related Party Transaction, Purchases from Related Party           265,455 $ 146,454  
Accounts Receivable, after Allowance for Credit Loss       $ 235,835   $ 235,835   $ 122,280