Shop

Products are split into three levels based on ingredient labels

GO
Best choice
SLOW
Contains ingredients with possible health concerns
STOP
Contains harmful ingredients
STOP

CLOROX

Heavy Duty Toilet Bowl Cleaner

Last verified: May 13, 2026

  • Water
  • Glycolic Acid
  • Hydroxyethylcellulose
  • Sodium Hydroxide
  • C10-12 Alcohol Ethoxylates
  • Alkyl C12-16 Dimethylbenzyl Ammonium Chloride
  • Quaternium-24
  • Ethanol
  • Didecyl Dimethyl Ammonium Chloride
  • Sodium Chloride
  • Dimethyldioctylammonium Chloride
  • Methoxyacetic Acid
  • Formic Acid
  • Colorant Ingredient
  • Polyoxyalkylene Substituted Chromophore (Blue)
  • Fragrance
  • Amyl Salicylate
  • Terpineol

Why This Product is Rated STOP

Heavy Duty Toilet Bowl Cleaner by CLOROX has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.

We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.

Learn more about how Million Marker scores products →

Frequently Asked Questions

Heavy Duty Toilet Bowl Cleaner by CLOROX - Non-toxic Household Cleaning Products product rated STOP by Million Marker, free from BPA, phthalates, and parabens

Where to buy

CLOROX Google Search

More from CLOROX

Toilet Bowl Cleaner With Bleach – Fresh Scent by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Toilet Bowl Cleaner With Bleach – Fresh Scent

Toilet Bowl Cleaner With Bleach – Rain Clean by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Toilet Bowl Cleaner With Bleach – Rain Clean

Tilex Mold & Mildew Remover by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Tilex Mold & Mildew Remover

Scentiva Disinfecting Wipes – Coconut & Waterlily by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Scentiva Disinfecting Wipes – Coconut & Waterlily

Scentiva Disinfecting Multi-Surface Cleaner – Lavender & Jasmine by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Scentiva Disinfecting Multi-Surface Cleaner – Lavender & Jasmine

Scentiva Bathroom Toilet Cleaning Gel – Lavender & Jasmine by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Scentiva Bathroom Toilet Cleaning Gel – Lavender & Jasmine

S.O.S. Soap-Filled Steel Wool Pads - Original by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

S.O.S. Soap-Filled Steel Wool Pads - Original

Multi-Purpose Paper Towel Wipes – Jasmine by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Multi-Purpose Paper Towel Wipes – Jasmine

Healthcare Hydrogen Peroxide Cleaner Disinfecting Wipes by CLOROX - Non-toxic, STOP rated product free from harmful chemicals
STOP

CLOROX

Healthcare Hydrogen Peroxide Cleaner Disinfecting Wipes

Free & Clear Multi-Surface Cleaner - Fragrance Free by CLOROX - Non-toxic, SLOW rated product free from harmful chemicals
SLOW

CLOROX

Free & Clear Multi-Surface Cleaner - Fragrance Free

More in Household Cleaning Products

Greasecutter Plus by ECOLAB - Non-toxic, STOP rated product free from harmful chemicals
STOP

ECOLAB

Greasecutter Plus

All-Purpose Cleaner - Orange by ECOS - Non-toxic, GO rated product free from harmful chemicals
GO

ECOS

All-Purpose Cleaner - Orange

All-Purpose Cleaner - Parsley by ECOS - Non-toxic, SLOW rated product free from harmful chemicals
SLOW

ECOS

All-Purpose Cleaner - Parsley

Window & Mirror Cleaner - Citrus Zest by ATTITUDE - Non-toxic, SLOW rated product free from harmful chemicals
SLOW

ATTITUDE

Window & Mirror Cleaner - Citrus Zest

All Purpose Cleaner - Lemon Verbena by Clean Cult - Non-toxic, STOP rated product free from harmful chemicals
STOP

Clean Cult

All Purpose Cleaner - Lemon Verbena

The Concentrate by Branch Basics - Non-toxic, GO rated product free from harmful chemicals
GO

Branch Basics

The Concentrate

All Purpose Cleaner - Free & Clear by Seventh Generation - Non-toxic, SLOW rated product free from harmful chemicals
SLOW

Seventh Generation

All Purpose Cleaner - Free & Clear

All Purpose Cleaner by Tee's Organics - Non-toxic, SLOW rated product free from harmful chemicals
SLOW

Tee's Organics

All Purpose Cleaner

Disinfecting Wipes - Lemon Scent by Clean Cult - Non-toxic, STOP rated product free from harmful chemicals
STOP

Clean Cult

Disinfecting Wipes - Lemon Scent

Multi-Surface Cleaner With Bleach by Kroger - Non-toxic, STOP rated product free from harmful chemicals
STOP

Kroger

Multi-Surface Cleaner With Bleach

More in Home

Predict & Confirm Kit by Proov - Non-toxic, GO rated product free from harmful chemicals
GO

Proov

Predict & Confirm Kit

Essential City Water Test by Tap Score - Non-toxic, GO rated product free from harmful chemicals
GO

Tap Score

Essential City Water Test

Detect & Detox Test Kit by Million Marker - Non-toxic, GO rated product free from harmful chemicals
GO

Million Marker

Detect & Detox Test Kit

Hers and His Advanced Fertility Kit by Proov - Non-toxic, GO rated product free from harmful chemicals
GO

Proov

Hers and His Advanced Fertility Kit

Complete Fertility Testing System by Proov - Non-toxic, GO rated product free from harmful chemicals
GO

Proov

Complete Fertility Testing System

Detect & Detox Test Kit: 2 Pack by Million Marker - Non-toxic, GO rated product free from harmful chemicals
GO

Million Marker

Detect & Detox Test Kit: 2 Pack

Sperm Test by Proov - Non-toxic, GO rated product free from harmful chemicals
GO

Proov

Sperm Test

Predict LH Test by Proov - Non-toxic, GO rated product free from harmful chemicals
GO

Proov

Predict LH Test

Reserve FSH Test by Proov - Non-toxic, GO rated product free from harmful chemicals
GO

Proov

Reserve FSH Test

Rain Water Test by Tap Score - Non-toxic, GO rated product free from harmful chemicals
GO

Tap Score

Rain Water Test