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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001140361-04-001520.txt : 20040224
<SEC-HEADER>0001140361-04-001520.hdr.sgml : 20040224
<ACCEPTANCE-DATETIME>20040224115611
ACCESSION NUMBER:		0001140361-04-001520
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040217
FILED AS OF DATE:		20040224

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KATY INDUSTRIES INC
		CENTRAL INDEX KEY:			0000054681
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				751277589
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6300 S SYRACUSE WAY STE 300
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80111-6723
		BUSINESS PHONE:		3032909300

	MAIL ADDRESS:	
		STREET 1:		6300 S SYRACUSE WAY SUITE 300
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80111

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CRL INC
		CENTRAL INDEX KEY:			0000942616

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05558
		FILM NUMBER:		04623885

	BUSINESS ADDRESS:	
		STREET 1:		7505 VILLAGE SQUARE DRIVE STE 200
		CITY:			CASTLE ROCK
		STATE:			CO
		ZIP:			80111
		BUSINESS PHONE:		3036888800

	MAIL ADDRESS:	
		STREET 1:		7505 VILLAGE SQUARE DR STE 200
		CITY:			CASTLE ROCK
		STATE:			CO
		ZIP:			80111
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2004-02-17</periodOfReport>

    <dateOfOriginalSubmission>2004-02-19</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000054681</issuerCik>
        <issuerName>KATY INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>KT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000942616</rptOwnerCik>
            <rptOwnerName>CRL INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7505 VILLAGE SQUARE DRIVE, SUITE 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CASTLE ROCK</rptOwnerCity>
            <rptOwnerState>X1</rptOwnerState>
            <rptOwnerZipCode>80108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-02-17</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2004-02-17</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2072236</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">CRL, Inc. directly beneficially owns 2,072,236 shares of the Issuer's outstanding common stock after giving effect to the transaction reported herein.  As stockholders of CRL, the WEC Jr. '58 Trust and the Reporting Person may be deemed to indirectly beneficially own such Shares.  The Reporting Person may be deemed to have an indirect pecuniary interest in the shares indirectly beneficially owned by the WEC Jr. '58 Trust through CRL to the extent that he and/or the members of his immediate family living in the same household are beneficiaries of that trust and as a stockholder of CRL.</footnote>
        <footnote id="F2">Members of the Wallace E. Carroll, Jr. immediate family are beneficiaries of the Wallace E. and Lelia H. Carroll Trust U/A Dated 5/1/58 F/B/O Wallace E. Carroll, Jr. and his descendants (the &quot;WEC Jr. '58 Trust&quot;), the Lelia H. Carroll Trust U/A Dated 7/12/62 F/B/O Wallace E. Carroll, Jr. (the &quot;WEC Jr. '62 Trust) and the Family Grandchildren Trust U/A dated 9/29/90 F/B/O the descendents of Wallace E. Carroll, Jr. (the ?Family Trust?) (collectively, the ?WEC Trusts?).

The WEC Jr. '58 Trust, the WEC Jr. '62 Trust and the Family Trust directly beneficially own 603,000, 194,693 and 6,942 shares of the Issuer's outstanding common stock, respectively, for an aggregate of 804,635 shares (the ?Trust Shares?).  The Reporting Person may be deemed to have an indirect pecuniary interest in the Trust Shares to the extent that he and/or the members of his immediate family living in the same household are beneficiaries of the WEC Trusts.</footnote>
        <footnote id="F3">Common stock is held by the Katy Industries, Inc. Directors? Deferred Compensation Plan in a Rabbi Trust arrangement.  2,855 shares are held for the benefit of Amelia M. Carroll, and 2,855 shares are held for the benefit of her spouse, Wallace E. Carroll, Jr.</footnote>
        <footnote id="F4">Members of Wallace E Carroll, Jr?s immediate family are beneficiaries of the WEC Trusts (see Note 1).  The Reporting Person may be deemed to have an indirect pecuniary interest in the Trust Shares to the extent that members of her immediate family living in the same household are beneficiaries of the WEC Trusts.</footnote>
        <footnote id="F5">Amelia M. Carroll may be deemed to have an indirect pecuniary interest in the CRL Shares to the extent that members of her immediate family living in the same household own CRL shares and are beneficiaries of the WEC Jr. '58 Trust (see Note 2).</footnote>
        <footnote id="F6">As a stockholders of CRL, Amelia M. Carroll and Wallace E. Carroll, Jr. may be deemed to have an indirect pecuniary interest in the CRL Shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Michael Paul, as attorney-in-fact for CRL, Inc.</signatureName>
        <signatureDate>2004-02-24</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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