EXHIBIT 23

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 0333-63359, 333-64977, 333-66419, 333-73188, 333-101282, and 333-139670 and Form S-3 No. 333-109892) of G&K Services, Inc. and in the related Prospectus of our reports dated August 27, 2007, with respect to the consolidated financial statements and schedules of G&K Services, Inc., and the effectiveness of internal control over financial reporting of G&K Services, Inc., included in the Annual Report (Form 10-K) for the year ended June 30, 2007.

/s/ Ernst & Young LLP

Ernst & Young LLP

Minneapolis, Minnesota

August 27, 2007

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