Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-141671) of Central Garden & Pet Company of our report dated June 25, 2009, with respect to the statements of net assets available for benefits of the Central Garden & Pet Investment Growth Plan as of December 31, 2008 and December 31, 2007, the related statement of changes in net assets available for benefits for the year ended December 31, 2008, and the related supplemental schedules, Schedule H, Line 4i - Schedule of Assets (Held at End of Year) and Schedule H, Line 4a - Schedule of Late Transmittal of Participant Loan Repayments as of and for the year ended December 31, 2008, which report appears in the December 31, 2008 annual report on Form 11-K of the Central Garden & Pet Investment Growth Plan.

/s/    MOHLER, NIXON & WILLIAMS

Accountancy Corporation

Campbell, California

June 25, 2009