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3. SIGNIFICANT ACCOUNTING POLICIES: ADOPTION OF ACCOUNTING STANDARDS (Details1) (USD $)
3 Months Ended
Dec. 31, 2014
Warrants - June 2013 Private Placement  
Market price and estimated fair value of common stock: $ 0.110us-gaap_SharePrice
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsJune2013PrivatePlacementMember
Exercise price 0.15-0.20
Expected term (years) 3-5 years
Dividend yield 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsJune2013PrivatePlacementMember
Expected volatility 76.70%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsJune2013PrivatePlacementMember
Risk-free interest rate 78.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsJune2013PrivatePlacementMember
Warrants - November 2013 IDMC Services and License Agreement  
Market price and estimated fair value of common stock: $ 0.11us-gaap_SharePrice
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsNovember2013Member
Exercise price .20
Expected term (years) 5 years
Dividend yield 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsNovember2013Member
Expected volatility 76.70%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsNovember2013Member
Risk-free interest rate 78.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_WarrantsNovember2013Member
Convertible Note Payable 1  
Market price and estimated fair value of common stock: $ 0.11us-gaap_SharePrice
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable1Member
Exercise price .70
Expected term (years) .75 years
Dividend yield 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable1Member
Expected volatility 76.70%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable1Member
Risk-free interest rate 78.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable1Member
Convertible Note Payable 2  
Market price and estimated fair value of common stock: $ 0.11us-gaap_SharePrice
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable2Member
Exercise price .70
Expected term (years) .75 years
Dividend yield 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable2Member
Expected volatility 76.70%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable2Member
Risk-free interest rate 78.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_DerivativeByNatureAxis
= VSUL_ConvertibleNotePayable2Member