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Document and Entity Information	6 Months Ended
	Feb. 28, 2013	Apr. 02, 2013
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Feb. 28, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Trading Symbol	WDFC
Entity Registrant Name	WD 40 CO
Entity Central Index Key	0000105132
Current Fiscal Year End Date	--08-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		15,468,334

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".

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