================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 ---------------
                                   SCHEDULE TO
                                (AMENDMENT NO. 2)

                                  (RULE 13E-4)
            TENDER OFFER STATEMENT UNDER SECTION 14(D)(1) OR 13(E)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                                 ---------------
                        NATIONAL SERVICE INDUSTRIES, INC.
     (Name of Subject Company (Issuer) and Names of Filing Person (Offeror))

           OPTIONS TO PURCHASE COMMON STOCK, PAR VALUE $1.00 PER SHARE
                         (Title of Class of Securities)

                                      NONE
                      (Cusip Number of Class of Securities)
                           --------------------------

                               CAROL ELLIS MORGAN
                     SENIOR VICE PRESIDENT, GENERAL COUNSEL,
                                  AND SECRETARY
                        NATIONAL SERVICE INDUSTRIES, INC.
                                    SUITE 200
                              1420 PEACHTREE STREET
                             ATLANTA, GEORGIA 30309
                            TELEPHONE: (404) 853-1000
            (Name, Address and Telephone Number of Person Authorized
        to Receive Notices and Communications on Behalf of Filing Person)
                                 ---------------

                                    COPY TO:
                               RUSSELL B. RICHARDS
                               KING & SPALDING LLP
                              191 PEACHTREE STREET
                           ATLANTA, GEORGIA 30303-1763
                            TELEPHONE: (404) 572-4600
                                 ---------------

                            CALCULATION OF FILING FEE

================================================================================

  TRANSACTION VALUATION*                               AMOUNT OF FILING FEE**
  ----------------------                               ----------------------
      $258,900.80                                              $20.97
================================================================================

*        Calculated solely for the purpose of determining the amount of the
         filing fee, based upon the purchase of 1,153,808 options at the
         purchase price applicable to each option. The purchase price for each
         option is the greater of (a) the amount by which $10.00 exceeds the
         exercise price of the option, if any, and (b) $.10. This offer relates
         to options at the following exercise prices: (i) 69,000 options at
         $7.82; and (ii) 1,084,808 options at exercise prices greater than
         $10.00. This amount includes 740,587 options held by executive officers
         and directors of the subject company. Such executive officers and
         directors have agreed to have their options cancelled without cash
         payment. The amount of the filing fee, calculated in accordance with
         Rule 0-11 of the Securities Exchange Act of 1934, as amended, equals
         $80.90 per $1,000,000 of the value of the transaction valuation.

**       Previously paid.


[ ]      CHECK THE BOX IF ANY PART OF THE FEE IS OFFSET AS PROVIDED BY RULE
         0-11(A)(2) AND IDENTIFY THE FILING WITH WHICH THE OFFSETTING FEE WAS
         PREVIOUSLY PAID. IDENTIFY THE PREVIOUS FILING BY REGISTRATION STATEMENT
         NUMBER, OR THE FORM OR SCHEDULE AND THE DATE OF ITS FILING.

  Amount Previously Paid:
                         -------------------------------------------------------


  Form or Registration No.:
                           -----------------------------------------------------


  Filing Party:
               -----------------------------------------------------------------


  Date Filed:
             -------------------------------------------------------------------

[ ]      CHECK THE BOX IF THE FILING RELATES SOLELY TO PRELIMINARY
         COMMUNICATIONS MADE BEFORE THE COMMENCEMENT OF A TENDER OFFER.

   Check the appropriate boxes below to designate any transactions to which the
statement relates:

[ ]      THIRD-PARTY TENDER OFFER SUBJECT TO RULE 14D-1.
[X]      ISSUER TENDER OFFER SUBJECT TO RULE 13E-4.
[ ]      GOING-PRIVATE TRANSACTION SUBJECT TO RULE 13E-3.
[ ]      SCHEDULE 13D UNDER RULE 13D-2.
Check the following box if the filing is a final amendment reporting the
results of the tender offer: [ ]
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                                   SCHEDULE TO

         This Tender Offer Statement on Schedule TO relates to the Registrant's
tender for any and all of the outstanding options to purchase its common stock.
The Registrant filed a Schedule TO on April 25, 2003 and an amendment thereto on
May 16, 2003.

         On May 23, 2003, the Registrant disseminated a notice to the option
holders that the Registrant had extended the expiration date to 5:00 p.m.,
Eastern Daylight Time, on June 3, 2003. A copy of that notice is attached hereto
as Exhibit (a)(6).


ITEM 12. EXHIBITS.

         (a) (1) Offer to Purchase, dated April 25, 2003.*

             (2) Form of Election to Tender Options.*

             (3) Form of letter to option holders.*

             (4) Issuer's Definitive Proxy Statement on Schedule 14A (filed with
             the Securities and Exchange Commission on May 14, 2003 and
             incorporated herein by reference).*

             (5) Supplement to Offer to Purchase, dated May 16, 2003.*

             (6) Notice to Holders of Options, dated May 23, 2003.

         (b)  Not applicable.

         (d)  Not applicable.

         (g)  Not applicable.

         (h)  Not applicable.

*  Previously filed.

ITEM 13. INFORMATION REQUIRED BY SCHEDULE 13E-3.

         (a)  Not applicable.


                                       i



                                    SIGNATURE

         After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                     National Service Industries, Inc.


                                     /s/ Carol Ellis Morgan
                                     -------------------------------------------
                                     Carol Ellis Morgan
                                     Senior Vice President, General Counsel, and
                                     Secretary

Date: May 23, 2003