3 Best Grout Cleaners for Mold: A Comprehensive Guide

Best Grout Cleaners

Have you ever taken a close look at your bathroom or kitchen tiles and noticed a dark, unsightly substance nestled within the grout lines? That’s right, we’re talking about mold. Not only is mold an eyesore, but it can also present health risks. But don’t fret! In this article, we’ll dive deep into the world of grout mold and explore the best cleaners to keep your tiles looking spick and span.

Understanding Mold: More than Just a Stain

Before we dive into the solutions, let’s understand the problem.

  • What is Mold?
    Mold is a type of fungus that thrives in moist environments. It reproduces by releasing spores, which can be harmful when inhaled.
  • Why Grout?
    Grout, being porous, provides the perfect conditions for mold to flourish, especially in damp areas like bathrooms.
  • Risks Involved:
    Mold can cause allergies, respiratory issues, and in severe cases, skin irritations.

Understanding mold is half the battle won. Now, let’s equip ourselves with the best grout cleaners to tackle this pesky invader.

Top Grout Cleaners for Mold: Our Top Picks

Choosing the right cleaner is crucial. Here are our top picks, each unique in its way:

  • Natural Solutions: Baking soda and vinegar, when combined, can act as an effective cleaner. The chemical reaction breaks down the mold, making it easier to scrub away.
  • Bleach-Based Cleaners: These are potent and can remove mold quickly. However, ensure proper ventilation when using them.
  • Specialized Grout Cleaners: These are commercially available products designed specifically for grout mold. They often come with targeted applicators for precise cleaning.
  • DIY Blends: Combining hydrogen peroxide with baking soda can give you a potent mixture that’s both effective and less harsh than bleach.

Here are our Top 3 specialized anti-mold cleaners:

  1. Tilex Mold & Mildew Remover
    • Benefits: This spray is a popular choice for many homeowners. It contains bleach, which is a potent mold killer. Not only does it eliminate mold and mildew, but it also helps to prevent future mold growth when used regularly.
    • Usage: Always wear gloves and ensure the room is well-ventilated when using bleach-based products.
  2. RMR-86 Instant Mold & Mildew Stain Remover
    • Benefits: RMR-86 is another strong cleaner that promises to remove mold and mildew stains in seconds. It’s particularly potent, so it works well for more severe mold and mildew issues.
    • Usage: Make sure to read the instructions before using. Like with all mold removers, you’ll want to wear protective gear (like gloves) and ensure good ventilation.
  3. Skylarlife Home Mold & Mildew Remover Gel Stain Remover
    • Benefits: This gel is great for targeting specific areas with mold growth. Its consistency allows it to stay on vertical surfaces, making it excellent for tile grout in showers. It’s also effective against black mold and various types of fungus.
    • Usage: Application is typically direct, using the nozzle to apply the gel onto the moldy grout. Always follow the instructions on the package.

Safety Tips:

  • Always read and follow the manufacturer’s instructions when using any cleaning product.
  • Wear protective gloves and eyewear when handling chemicals.
  • Ensure the area is well-ventilated, especially when using bleach or other strong chemicals.
  • Test any product in an inconspicuous area first to ensure it doesn’t damage or discolor the surface.
  • Keep these products out of reach of children and pets.

Remember that preventing mold growth is often easier than treating it. Keeping areas dry, using a fan or dehumidifier, and regular cleaning can help prevent mold from taking hold in your grout in the first place.

Product Longevity (1-5) Ease of Use (1-5) Smell (1-5)
Tilex Mold & Mildew Remover 4 4 3
RMR-86 Instant Mold & Mildew Stain Remover 5 4 3
Skylarlife Home Mold & Mildew Remover Gel Stain Remover 3 5 4

Rating Scale: 1 (Poor) – 5 (Excellent)


  • Longevity: Refers to how long the product remains effective and how long the results last after cleaning.
  • Ease of Use: Refers to the application process, how intuitive it is to use, and whether additional steps or tools are needed.
  • Smell: Refers to the odor of the product. A higher rating indicates a more pleasant or less overpowering odor.

1. Review of Tilex Mold & Mildew Remover

Tilex Mold & Mildew Remover is a stalwart in the realm of household cleaning products, especially when it comes to tackling the unsightly and often persistent issues of mold and mildew. It’s primarily bleach-based, which means it packs a punch against stubborn growths.

Price on Amazon at time of publish: $5.48 per 32 oz → Check the price

Should you buy Tilex Mold & Mildew Remover?

Effective: Its potent formula ensures that mold and mildew are not just cleaned but also eradicated, reducing recurrence chances.
User-Friendly: The spray bottle design ensures that it can be applied with minimal fuss and effort.
Multipurpose: While it's great for tile grout, it's also effective on a variety of other surfaces, making it versatile.
Strong Odor: Being bleach-based, the smell can be overpowering for some, necessitating good ventilation during use.
Potential Surface Discoloration: On certain surfaces, especially if left for too long, it can lead to discoloration.
Safety Precautions Needed: As with all bleach products, care needs to be taken during use. This includes wearing gloves and ensuring it doesn't come into contact with the skin.
Value for money
Easy to use
Tilex Mold & Mildew Remover is undeniably a powerful tool in the fight against mold and mildew. While it has its drawbacks, with proper use and precautions, it can be an invaluable asset for homeowners seeking a clean, mold-free environment.


  1. Bleach-based Formula: Tilex’s main component, bleach, is well-known for its potent mold and mildew eliminating properties.
  2. Spray Application: This ensures ease of use, allowing users to target specific areas without unnecessary wastage.
  3. Preventative Action: Beyond just removal, with regular use, Tilex helps in preventing future mold and mildew growth, making maintenance easier.

2. Review of RMR-86 Instant Mold & Mildew Stain Remover

RMR-86 Instant Mold & Mildew Stain Remover is a frontrunner when it comes to swiftly tackling mold and mildew problems. Its quick-action formula sets it apart, ensuring that unsightly stains and growths are addressed in a matter of seconds.

Price on Amazon at time of publish: $16.99 per 32 oz → Check the price

Should you buy RMR-86 Instant Mold & Mildew Stain Remover?

Time-Saver: Its fast-acting nature ensures that stains are addressed almost immediately, saving users valuable time during cleaning.
Versatility: Effective on a multitude of surfaces, RMR-86 is not just limited to bathroom tiles or kitchen counters.
Powerful: The formula has been designed to combat even the most stubborn of stains, ensuring comprehensive cleaning.
Odor Concerns: Some users might find the chemical smell to be a bit strong, making it essential to use in well-ventilated areas.
Safety Measures: Due to its powerful formula, it's crucial to wear protective gear, like gloves and goggles, during application.
Possible Residue: If not rinsed or wiped properly, it might leave a slight residue on the surfaces.
Value for money
Easy to use
RMR-86 Instant Mold & Mildew Stain Remover solidifies its position as a top-tier cleaning agent with its instant results. While it's important to handle with care, its effectiveness is undeniable, making it a top choice for those grappling with mold and mildew issues.


  1. Rapid-Action Formula: RMR-86 is aptly named, emphasizing its instant stain removal capabilities.
  2. Spray Application: The spray mechanism allows for precise and targeted application, ensuring you hit right where the problem is.
  3. Broad Spectrum: Not just limited to mold and mildew, it’s designed to combat a wide range of stains and growths.

3. Review of Skylarlife Home Mold & Mildew Remover Gel Stain Remover

Skylarlife Home Mold & Mildew Remover Gel Stain Remover is a unique and innovative solution to the age-old problem of mold and mildew. Unlike the typical liquid-based products, its gel consistency ensures targeted and lasting application, particularly on vertical surfaces.

Price on Amazon at time of publish: $6.99 per 32 oz → Check the price

Should you buy Skylarlife Home Mold & Mildew Remover?

Stays Put: The gel consistency means that it won't drip down, ensuring that the product remains in contact with the mold or mildew for effective removal.
Ease of Use: The precision nozzle simplifies the application process, making it user-friendly even for first-timers.
Effective for Stubborn Spots: The concentrated gel formula can tackle even entrenched growths, making it ideal for those persistent problem areas.
Requires Longer Contact Time: Due to its nature, it may need to remain on the stain for longer durations compared to instant-acting liquid formulas.
Limited Volume: Given its targeted application design, users might find themselves needing more product for larger areas.
Mild Odor: While not as strong as some competitors, there's a discernible smell which some users might find off-putting.
Value for money
Easy to use
Skylarlife's gel-based mold and mildew remover presents a novel approach to an age-old problem. While there are considerations to be made about application time and volume, its targeted effectiveness, especially in tricky areas, makes it a worthy contender in the realm of household cleaning products.


  1. Gel Consistency: This standout feature ensures that the product remains where it’s applied, making it especially effective for vertical areas.
  2. Nozzle Application: Designed for precision, the nozzle allows users to apply the gel directly to the affected spots without any drips or runs.
  3. Broad-Spectrum Efficacy: Aside from mold and mildew, the gel is adept at handling various types of fungi, ensuring a comprehensive clean.

The Cleaning Process: Step-by-Step

Step 1: Safety First: Always wear gloves, and ensure the area is well-ventilated.

Step 2: Apply the Cleaner: Whether you’re using a homemade solution or a commercial product, apply it generously over the mold.

Step 3: Let it Sit: Give the cleaner some time to work its magic. Typically, 5-10 minutes should suffice.

Step 4: Scrub Away: Using a brush, scrub the grout lines gently, ensuring you don’t damage the grout.

Step 5: Rinse and Dry: Once done, rinse off the cleaner and dry the area thoroughly.

Prevention: The Long-Term Strategy

While cleaning is effective, prevention is the key.

  • Ventilation: Ensure that bathrooms and kitchens are well-ventilated. Consider investing in exhaust fans.
  • Regular Cleaning: Don’t wait for mold to appear. Regular cleaning can prevent mold buildup.
  • Seal the Grout: Sealing the grout lines can prevent moisture absorption, reducing the chance of mold growth.

Remember the old saying, “An ounce of prevention is worth a pound of cure”? It couldn’t be truer here.


Mold in grout lines can be a persistent issue, but with the right approach and products, you can ensure your tiles remain pristine. Not only is this essential for aesthetics but also for the health and well-being of your loved ones. So arm yourself with the best grout cleaner, roll up those sleeves, and show that mold who’s boss!

Frequently Asked Questions
How often should I clean the grout?
For best results, clean grout at least once a week and deep-clean once a month.
Are natural cleaners as effective as commercial ones?
Natural cleaners can be effective, but for deep-set mold, commercial cleaners may be more potent.
Can I mix different grout cleaners?
No, mixing different cleaners can produce toxic fumes. Always use them separately.
Does bleach permanently remove mold from grout?
Bleach can remove the appearance of mold but may not kill the root. It's best combined with other treatments.
How long should I let the cleaner sit before scrubbing?
Follow the manufacturer’s instructions. Generally, 5-15 minutes is recommended, but it can vary.
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