**Exhibit 12**

 

**Zep Inc.**

**Ratio of Earnings to Fixed Charges and of Earnings to Combined Fixed Charges and Preferred**

**Stock Dividends**

*(In thousands, except ratios)*

 
| ** **                                                                  | ** ** | **Fiscal Year Ended August 31,** | ** ** |
|-----------------------------------------------------------------------------|------------|------------------------------------------------------|------------|
| ** **                                                                  | ** ** | **2011**                                             | ** ** | **2010** | ** ** | **2009** | ** ** | **2008** | ** ** | **2007** | ** ** |
| Income before Provision for Income Taxes                                    |       | $                                                    | 26,695     |   | $ | 21,711 |   | $ | 15,184 |   | $ | 25,991 |   | $ | 24,837 |   |
| Additions:                                                                  |       |                                                 |       |   |   |   |   |   |   |   |   |
| Fixed charges                                                               |       | 7,398                                                |       | 3,108 |   | 2,447 |   | 4,038 |   | 6,026 |   |
|                                                                        |       |                                                 |       |   |   |   |   |   |   |   |   |
| Total Earnings                                                              |       | $                                                    | 34,093     |   | $ | 24,819 |   | $ | 17,631 |   | $ | 30,029 |   | $ | 30,863 |   |
|                                                                        |       |                                                 |       |   |   |   |   |   |   |   |   |
| Fixed Charges                                                               |       |                                                 |       |   |   |   |   |   |   |   |   |
| Interest expense                                                            |       | $                                                    | 6,659      |   | $ | 2,434 |   | $ | 1,791 |   | $ | 3,081 |   | $ | 5,218 |   |
| Preferred stock dividends                                                   |       | —                                               |       | — |   | — |   | — |   | — |   |
| Capitalized interest                                                        |       | —                                               |       | — |   | — |   | — |   | — |   |
| Estimate of interest portion of rental expenses                             |       | 739                                                  |       | 674 |   | 656 |   | 957 |   | 808 |   |
|                                                                        |       |                                                 |       |   |   |   |   |   |   |   |   |
| Total Fixed Charges                                                         |       | $                                                    | 7,398      |   | $ | 3,108 |   | $ | 2,447 |   | $ | 4,038 |   | $ | 6,026 |   |
|                                                                        |       |                                                 |       |   |   |   |   |   |   |   |   |
| Ratio of Earnings to Fixed Charges                                          |       | 4.6                                                  |       | 8.0 |   | 7.2 |   | 7.4 |   | 5.1 |   |
|                                                                        |       |                                                 |       |   |   |   |   |   |   |   |   |
| Ratio of Earnings to Combined Fixed Charges and   Preferred Stock Dividends |       | 4.6                                                  |       | 8.0 |   | 7.2 |   | 7.4 |   | 5.1 |   |

 

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