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                                                             Exhibit 10(iii)A(6)

                       NONQUALIFIED STOCK OPTION AGREEMENT
                 FOR EXECUTIVE OFFICERS AND DIVISION PRESIDENTS


     THIS  AGREEMENT,  made as of the 17th day of  September,  1996 (the  "Grant
Date"),  between National Service Industries,  Inc., a Delaware corporation (the
"Company"), and ___________ (the "Optionee").

     WHEREAS,  the Company has adopted the  National  Service  Industries,  Inc.
Long-Term  Incentive  Program  (the  "Plan")  in  order  to  provide  additional
incentive  to  certain  officers  and  key  employees  of the  Company  and  its
Subsidiaries; and

     WHEREAS,  the Optionee  performs services for the Company and/or one of its
Subsidiaries; and

     WHEREAS,  the  Committee  responsible  for  administration  of the Plan has
determined to grant the Option to the Optionee as provided herein.

     NOW, THEREFORE, the parties hereto agree as follows:

     1. Grant of Option.

          1.1 The Company  hereby  grants to the  Optionee  the right and option
(the  "Option") to purchase  all or any part of an  aggregate of  _________whole
Shares subject to, and in accordance with, the terms and conditions set forth in
this Agreement.

          1.2 The Option is not intended to qualify as an Incentive Stock Option
within the meaning of Section 422 of the Code.

          1.3 This  Agreement  shall be construed in accordance  and  consistent
with,  and subject to, the  provisions of the Plan (the  provisions of which are
incorporated  herein by reference) and, except as otherwise  expressly set forth
herein,  the  capitalized  terms  used in this  Agreement  shall  have  the same
definitions as set forth in the Plan.

     2. Purchase Price.

          The price at which the Optionee  shall be entitled to purchase  Shares
upon the exercise of the Option shall be $38.00 per Share.

     3. Duration of Option.

          The  Option  shall be  exercisable  to the  extent  and in the  manner
provided  herein  for a  period  of ten (10)  years  from the  Grant  Date  (the
"Exercise Term");  provided,  however, that the Option may be earlier terminated
as provided in Section 6 hereof.

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                                                             Exhibit 10(iii)A(6)

     4. Exercisability of Option.

          Unless  otherwise  provided in this  Agreement or the Plan, the Option
shall  entitle the  Optionee to  purchase,  in whole at any time or in part from
time to time,  _________ , and each such right of purchase  shall be  cumulative
and shall  continue,  unless sooner  exercised or terminated as herein  provided
during the remaining period of the Exercise Term.

     5. Manner of Exercise and Payment.

          5.1  Subject to the terms and  conditions  of this  Agreement  and the
Plan,  the Option may be exercised by delivery of written notice to the Company,
at its principal  executive office. Such notice shall state that the Optionee is
electing to exercise the Option and the number of Shares in respect of which the
Option  is being  exercised  and  shall  be  signed  by the  person  or  persons
exercising  the Option.  If requested by the  Committee,  such person or persons
shall (i)  deliver  this  Agreement  to the  Secretary  of the Company who shall
endorse thereon a notation of such exercise and (ii) provide  satisfactory proof
as to the right of such person or persons to exercise the Option.

          5.2  The  notice  of  exercise  described  in  Section  5.1  shall  be
accompanied  by the full  purchase  price for the Shares in respect of which the
Option is being  exercised,  in cash, by check or by transferring  Shares to the
Company  having a Fair Market  Value on the day  preceding  the date of exercise
equal to the cash amount for which such Shares are substituted.

          5.3 Upon receipt of notice of exercise and full payment for the Shares
in respect of which the Option is being exercised, the Company shall, subject to
Section  17 of the Plan,  take such  action as may be  necessary  to effect  the
transfer to the  Optionee of the number of Shares as to which such  exercise was
effective.

          5.4 The  Optionee  shall not be deemed to be the holder of, or to have
any of the rights of a holder with  respect to any Shares  subject to the Option
until (i) the Option  shall have been  exercised  pursuant  to the terms of this
Agreement  and the  Optionee  shall  have paid the full  purchase  price for the
number of Shares in respect of which the Option was exercised,  (ii) the Company
shall  have  issued and  delivered  the  Shares to the  Optionee,  and (iii) the
Optionee's  name shall have been entered as a stockholder of record on the books
of the  Company,  whereupon  the  Optionee  shall  have  full  voting  and other
ownership rights with respect to such Shares.

     6. Termination of Employment.

          6.1 In General. If the employment of the Optionee with the Company and
its Subsidiaries shall terminate for any reason,  other than for the reasons set
forth in Sections 6.2 and 7.2 below,  the Optionee's  right to exercise any then
outstanding  Options  (whether or not vested) shall terminate  immediately  upon
termination of employment.

                                                                         Page 21
                                                             Exhibit 10(iii)A(6)

     6.2 Termination of Employment Due to Death, Disability.

          If  the  Optionee's   termination  of  employment  is  due  to  death,
Disability or Retirement  (termination  on or after age 65), the following shall
apply:

          (a)  Termination  Due To Death.  In the event the Optionee  dies while
               actively employed,  all vested Options at the date of death shall
               remain  exercisable  at any time prior to the  expiration  of the
               Exercise  Term  by (A) a  Permitted  Transferee  (as  defined  in
               Section 8 below),  if any, or such  person(s)  that have acquired
               the  Optionee's  rights under such Options by will or by the laws
               of descent and  distribution,  or (B) if no such person described
               in (A) exists,  the Optionee's  estate or  representative  of the
               Optionee's estate. All Options that are not vested as of the date
               of death shall be immediately forfeited.

          (b)  Termination  by  Disability.  In the event the  employment of the
               Optionee  is  terminated  by reason  of  Disability,  all  vested
               Options  as of the date the  Committee  determines  the  Optionee
               terminated  for Disability  shall remain  exercisable at any time
               prior to the  expiration of the Exercise  Term.  All Options that
               are not vested as of the date of termination for Disability shall
               be immediately forfeited.

          (c)  Termination  by  Retirement.  In the event the  employment of the
               Optionee is terminated by reason of  Retirement,  the  Optionee's
               Options shall  continue to vest in  accordance  with the original
               schedule  (just as if the  Optionee had  remained  employed)  and
               shall remain  exercisable  at any time prior to the expiration of
               the Exercise  Term.  In the event of the  Optionee's  death after
               Retirement, the Options shall continue to vest and be exercisable
               in  accordance  with this  subsection  (c) as if the Optionee had
               lived  and  the  Options  shall  be  exercisable  by the  persons
               described in (a) above.

     7. Effect of Change in Control.

          7.1  Notwithstanding  anything  contained  to  the  contrary  in  this
Agreement,  in the event of a Change in  Control,  (i) the Option  shall  become
immediately  and fully  exercisable,  and (ii) the Optionee will be permitted to
surrender for cancellation  within sixty (60) days after such Change in Control,
the Option or any portion of the Option to the extent not yet exercised, and the
Optionee  shall be entitled to receive  immediately  a cash payment in an amount
equal to the excess,  if any, of (A) the greater of (x) the Fair Market Value on
the date preceding the date of surrender, of the shares subject to the Option or
portion of the Option surrendered,  or (y) the Adjusted Fair Market Value of the
Shares  subject  to the  Option or  portion  thereof  surrendered,  over (B) the
aggregate  purchase price for such Shares under the Option;  provided,  however,
that if the Option  was  granted  within  six (6) months  prior to the Change in
Control and the Optionee may be subject to liability  under Section 16(b) of the
Exchange  Act, the Optionee  shall be entitled to surrender  the Option,  or any
portion  of the  Option,  for  cancellation  during  the sixty  (60) day  period
following  the  expiration  of six (6) months from the Grant Date and to receive
the amount described above with respect to such surrender for cancellation.

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                                                             Exhibit 10(iii)A(6)

          7.2 If the  employment  of the Optionee is  terminated  within two (2)
years  following a Change in Control,  all vested  Options shall  continue to be
exercisable  at any  time  within  three  (3)  years  after  the  date  of  such
termination  of  employment,  but in no event after  expiration  of the Exercise
Term.

     8. Nontransferability.

          The Option shall not be transferable other than by will or by the laws
of descent and distribution.  Notwithstanding  the foregoing,  the Option may be
transferred,  in whole or in part, without consideration,  by written instrument
signed by the Optionee,  to any members of the immediate  family of the Optionee
(i.e., spouse,  children and grandchildren),  any trusts for the benefit of such
family members or any  partnerships  whose only partners are such family members
(the "Permitted Transferees").  Appropriate evidence of any such transfer to the
Permitted  Transferees  shall  be  delivered  to the  Company  at its  principal
executive  office.  If all or part of the Option is  transferred  to a Permitted
Transferee,  the Permitted Transferee's rights hereunder shall be subject to the
same  restrictions  and limitations  with respect to the Option as the Optionee.
During the lifetime of the Optionee, the Option shall be exercisable only by the
Optionee, or if applicable, by the Permitted Transferees.

     9. No Right to Continued Employment.

          Nothing  in  this  Agreement  or the  Plan  shall  be  interpreted  or
construed to confer upon the Optionee any right with respect to  continuance  of
employment by the Company or a Subsidiary,  nor shall this Agreement or the Plan
interfere in any way with the right of the Company or a Subsidiary  to terminate
the Optionee's employment at any time.

     10. Adjustments.

          In the event of a Change in  Capitalization,  the  Committee  may make
appropriate  adjustments  to the  number  and class of Shares or other  stock or
securities subject to the Option and the purchase price for such Shares or other
stock or securities. The Committee's adjustment shall be made in accordance with
the  provisions  of  Section  11 of the Plan and shall be  effective  and final,
binding and conclusive for all purposes of the Plan and this Agreement.

     11. Terminating Events.

          Subject  to  Section  7  hereof,  upon the  effective  date of (i) the
liquidation or dissolution of the Company or (ii) a merger or  consolidation  of
the Company (a "Transaction"), the Option shall continue in effect in accordance
with its terms and the  Optionee  shall be entitled to receive in respect of all
Shares subject to the Option,  upon exercise of the Option,  the same number and
kind of stock,  securities,  cash,  property  or other  consideration  that each
holder of Shares was entitled to receive in the Transaction.

                                                                         Page 23
                                                             Exhibit 10(iii)A(6)

     12. Withholding of Taxes.

          The Company  shall have the right to deduct from any  distribution  of
cash to the  Optionee an amount  equal to the  federal,  state and local  income
taxes  and  other  amounts  as  may be  required  by  law  to be  withheld  (the
"Withholding  Taxes") with respect to the Option. If the Optionee is entitled to
receive  Shares  upon  exercise  of the  Option,  the  Optionee  shall  pay  the
Withholding  Taxes to the Company in cash prior to the  issuance of such Shares.
In  satisfaction  of the  Withholding  Taxes,  the  Optionee  may make a written
election  (the  "Tax  Election"),  which  may be  accepted  or  rejected  in the
discretion of the Committee,  to have withheld a portion of the Shares  issuable
to him or her upon exercise of the Option, having an aggregate Fair Market Value
equal to the withholding Taxes, provided that, if the Optionee may be subject to
liability under Section 16(b) of the Exchange Act, the election must comply with
the requirements applicable to Share transactions by such Optionees.

     13. Employee Bound by the Plan.

          The  Optionee  hereby  acknowledges  receipt of a copy of the Plan and
agrees to be bound by all the terms and provisions thereof.

     14. Modification of Agreement.

          This Agreement may be modified,  amended, suspended or terminated, and
any terms or conditions may be waived, but only by a written instrument executed
by the parties hereto.

     15. Severability.

          Should any provision of this Agreement be held by a court of competent
jurisdiction  to be  unenforceable  or invalid  for any  reason,  the  remaining
provisions  of this  Agreement  shall not be affected by such  holding and shall
continue in full force in accordance with their terms.

     16. Governing Law.

          The validity,  interpretation,  construction  and  performance of this
Agreement shall be governed by the laws of the State of Delaware  without giving
effect to the conflicts of laws principles thereof.

     17. Successors in Interest.

          This Agreement  shall inure to the benefit of and be binding upon each
successor  corporation.  This  Agreement  shall  inure  to  the  benefit  of the
Optionee's legal representatives.  All obligations imposed upon the Optionee and
all rights granted to the Company under this Agreement  shall be final,  binding
and conclusive  upon the Optionee's  heirs,  executors,  Permitted  Transferees,
administrators and successors.

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                                                             Exhibit 10(iii)A(6)

     18. Resolution of Disputes.

          Any dispute or disagreement  which may arise under, or as a result of,
or in any way relate to, the interpretation, construction or application of this
Agreement shall be determined by the Committee. Any determination made hereunder
shall be final,  binding and  conclusive on the Optionee and the Company for all
purposes.


ATTEST                                        NATIONAL SERVICE INDUSTRIES, INC.



                                              By: /s/ James S. Balloun

Secretary                                     James S. Balloun
                                              Chairman of the Board and
                                              Chief Executive Officer



                                             /s/
                                             Name of Optionee