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, |        | Nine MonthsEndedMay 31, |   | Three MonthsEndedMay 31,
|                                                                          |  | 2009                         |        | 2008                    |   | 2007                     |  | 2006 |        | 2005 |   | 2010   |  | 2010
|Income before Provision for Income Taxes                                  |  | $                            | 15,184 |                         | $ | 25,991                   |  | $    | 24,837 |      | $ | 35,823 |  | $    | 35,104 |  | $ | 18,315 |  | $ | 8,628
|Additions:                                                                |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Fixed charges                                                             |  |                              | 2,447  |                         |   | 4,038                    |  |      | 6,026  |      |   | 5,307  |  |      | 3,649  |  |   | 1,821  |  |   | 736  
|                                                                          |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Total Earnings                                                            |  | $                            | 17,631 |                         | $ | 30,029                   |  | $    | 30,863 |      | $ | 41,130 |  | $    | 38,753 |  | $ | 20,136 |  | $ | 9,364
|                                                                          |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Fixed Charges                                                             |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Interest expense                                                          |  | $                            | 1,791  |                         | $ | 3,081                    |  | $    | 5,218  |      | $ | 4,641  |  | $    | 2,935  |  | $ | 1,312  |  | $ | 563  
|Preferred stock dividends                                                 |  |                              |       |                         |   |                         |  |      |       |      |   |       |  |      |       |  |   |       |  |   |     
|Capitalized interest                                                      |  |                              |       |                         |   |                         |  |      |       |      |   |       |  |      |       |  |   |       |  |   |     
|Estimate of interest portion of rental expenses                           |  |                              | 656    |                         |   | 957                      |  |      | 808    |      |   | 666    |  |      | 714    |  |   | 509    |  |   | 173  
|                                                                          |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Total Fixed Charges                                                       |  | $                            | 2,447  |                         | $ | 4,038                    |  | $    | 6,026  |      | $ | 5,307  |  | $    | 3,649  |  | $ | 1,821  |  | $ | 736  
|                                                                          |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Ratio of Earnings to Fixed Charges                                        |  |                              | 7.2    |                         |   | 7.4                      |  |      | 5.1    |      |   | 7.8    |  |      | 10.6   |  |   | 11.1   |  |   | 12.7 
|                                                                          |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |      
|Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends |  |                              | 7.2    |                         |   | 7.4                      |  |      | 5.1    |      |   | 7.8    |  |      | 10.6   |  |   | 11.1   |  |   | 12.7 
|                                                                          |  |                              |        |                         |   |                          |  |      |        |      |   |        |  |      |        |  |   |        |  |   |