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, |       
|                                                                          |  | 2010                         |        |  | 2009 |   |        | 2008 |  |   | 2007   |  |  | 2006 |       
|Income before Provision for Income Taxes                                  |  | $                            | 21,711 |  |      | $ | 15,184 |      |  | $ | 25,991 |  |  | $    | 24,837 |  |  | $ | 35,823 | 
|Additions:                                                                |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|Fixed charges                                                             |  |                              | 3,108  |  |      |   | 2,447  |      |  |   | 4,038  |  |  |      | 6,026  |  |  |   | 5,307  | 
|                                                                          |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|Total Earnings                                                            |  | $                            | 24,819 |  |      | $ | 17,631 |      |  | $ | 30,029 |  |  | $    | 30,863 |  |  | $ | 41,130 | 
|                                                                          |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|                                                                          |  |                              |        |  |     
|Fixed Charges                                                             |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|Interest expense                                                          |  | $                            | 2,434  |  |      | $ | 1,791  |      |  | $ | 3,081  |  |  | $    | 5,218  |  |  | $ | 4,641  | 
|Preferred stock dividends                                                 |  |                              |       |  |      |   |       |      |  |   |       |  |  |      |       |  |  |   |       | 
|Capitalized interest                                                      |  |                              |       |  |      |   |       |      |  |   |       |  |  |      |       |  |  |   |       | 
|Estimate of interest portion of rental expenses                           |  |                              | 674    |  |      |   | 656    |      |  |   | 957    |  |  |      | 808    |  |  |   | 666    | 
|                                                                          |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|Total Fixed Charges                                                       |  | $                            | 3,108  |  |      | $ | 2,447  |      |  | $ | 4,038  |  |  | $    | 6,026  |  |  | $ | 5,307  | 
|                                                                          |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|                                                                          |  |                              |        |  |     
|Ratio of Earnings to Fixed Charges                                        |  |                              | 8.0    |  |      |   | 7.2    |      |  |   | 7.4    |  |  |      | 5.1    |  |  |   | 7.8    | 
|                                                                          |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        | 
|                                                                          |  |                              |        |  |     
|Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends |  |                              | 8.0    |  |      |   | 7.2    |      |  |   | 7.4    |  |  |      | 5.1    |  |  |   | 7.8    | 
|                                                                          |  |                              |        |  |      |   |        |      |  |   |        |  |  |      |        |  |  |   |        |