Key Takeaways
- Tea tree oil's active compound, terpinen-4-ol, and clove oil's active compound, eugenol, both show antimicrobial and antifungal activity against household mould.
- Neither oil consistently outperforms the other when used alone, and research points to a combined blend as the more effective approach.
- Both oils are natural, but "natural" does not mean risk free. Care is needed around children, pets and anyone with allergies.
- Green Goo blends both oils across its Anti Mould Spray and Power Crystals range for combined removal and ongoing prevention.
- A natural product still needs the correct dwell time and moisture control to keep mould from coming back.
When mould appears in your home, it is easy to reach for a harsh chemical cleaner. It may come as a surprise that harsh chemicals are not the only option. Oils such as clove and tea tree have antimicrobial and antifungal properties that can do a genuinely effective job of keeping mould at bay. Natural ingredients like these are often a better choice for the health of your family, the environment, and the surfaces and fixtures in your home.
So is clove oil or tea tree oil better against mould? The honest answer is that it is not as simple as picking one over the other. Both oils contain naturally occurring compounds that help stop fungal growth, but each has different characteristics. Below, we compare both and explain why Green Goo uses a combination of the two for a more effective result.
Antimicrobial Properties of Clove vs Tea Tree Oil
Tea tree oil contains a compound called terpinen-4-ol, an antimicrobial agent that disrupts the cell membranes of fungi and bacteria. Clove oil contains eugenol, a bioactive compound with demonstrated antibacterial and antifungal properties. Research has shown both compounds can be effective against fungal growth and mould. When it comes to which oil is "better," there is no single answer, as combining clove and tea tree oil creates a complementary blend with stronger overall results than either ingredient used in isolation.
| Property | Tea Tree Oil | Clove Oil |
|---|---|---|
| Active compound | Terpinen-4-ol | Eugenol |
| Primary strength | Antimicrobial and antifungal action, fresh scent | Antibacterial, antifungal and antiseptic action |
| Best used for | Broad antifungal coverage on hard surfaces | Breaking down established mould growth |
| Watch for | Skin irritation in sensitive individuals, toxicity to cats | Skin and mucous membrane irritation at high concentration |
Effectiveness Against Black Mould
Most Australian households have dealt with black mould at some point. It is a nuisance that can be harmful to health and stems from excess moisture. The best way to address black mould is to fix the root cause, usually the moisture source, though this is not always straightforward in areas such as kitchens and bathrooms.
Because both tea tree oil and clove oil have antifungal properties, they are a genuinely useful natural option for controlling black mould at home, helping to both kill existing growth and reduce the chance of it returning.
Are Clove and Tea Tree Oils Safe for Kids, Pets, and People With Allergies?
In general, household cleaners formulated with natural ingredients instead of harsh chemicals are less harmful to people, pets and the environment, but they still need to be used responsibly. Natural does not always mean risk free. Essential oils can cause irritation in some people, so it is worth wearing gloves and using care when applying them.
If you have pets, some essential oils can be toxic to them, and concentrated tea tree oil in particular can cause health issues in animals. Always follow the directions on the packaging, keep products out of reach of children and pets, and make sure the area is well ventilated while you work.
Main Differences Between Clove Oil and Tea Tree Oil
The main difference between the two oils comes down to their active compounds: tea tree oil is associated with terpinen-4-ol, while clove oil is rich in eugenol. Both compounds can be effective against mould, particularly when blended together in a specific concentration. Comparing the oils in isolation can be misleading, since neither necessarily performs better than the other when used alone.
Green Goo's Blend of Both Oils
Green Goo's mould control products harness both clove oil and tea tree oil to deliver an effective formulation against fungal growth and mould. The Anti Mould Spray range combines both oils to tackle existing mould, while the Power Crystals gradually release a blend of the same oils into the surrounding air to help prevent future growth.
Rather than relying on a single oil, Green Goo combines both, bringing together different antimicrobial properties for a genuinely natural approach to mould control. The formulation behind this blend is detailed further on our antimicrobial effectiveness research page. When used as directed alongside proper moisture management, natural oils can be highly effective in the home, without the harsher side effects of abrasive chemical alternatives.
DIY Essential Oils vs a Professionally Formulated Blend
It is tempting to buy a bottle of tea tree or clove oil and apply it directly to a patch of mould, but this is not the same as using a purpose-built product. Essential oils are highly concentrated, and getting the ratio wrong can mean too little active ingredient to be effective, or too much, which can irritate skin or damage certain surfaces.
A professionally formulated blend combines both oils in tested proportions, along with a carrier and delivery method designed to keep the active compounds in contact with the mould for long enough to work. This is the difference between an ingredient that is antifungal in a laboratory setting and a finished product that performs consistently on a bathroom tile, a timber windowsill or a fabric surface at home.
How to Apply Oil-Based Mould Treatments for Best Results
Getting a good result from any tea tree or clove oil based product comes down to a few simple habits:
- Apply directly to the affected area rather than the whole room, so the active oils are concentrated where they are needed.
- Allow the recommended dwell time before wiping. Wiping too early reduces the time the oils have to act on the mould.
- Work in a ventilated space, particularly in small rooms such as bathrooms and laundries.
- Reapply as directed for heavier or established mould, rather than assuming a single application will be enough.
- Address the moisture source alongside treatment, since even the most effective natural oil blend cannot compensate for an ongoing damp environment.
Used this way, a well-formulated tea tree and clove oil blend can be a genuinely effective, lower-fume alternative to harsher chemical mould removers, particularly for households who want to avoid strong chemical odours while still getting a thorough result.
Frequently Asked Questions
Is tea tree oil or clove oil better for killing mould?
Neither oil is consistently better than the other on its own. Tea tree oil's terpinen-4-ol and clove oil's eugenol both show antifungal activity, and combining the two produces a more effective result than either used alone.
Can I use tea tree and clove oil around children and pets?
Natural products still require care. Keep essential oil based cleaners out of reach of children and pets, ventilate the area while using them, and always follow the directions on the product label.
Why does Green Goo combine both oils instead of using just one?
Combining tea tree and clove oil creates a broader, complementary range of antimicrobial action than either oil alone, which is why Green Goo's sprays and Power Crystals are formulated with both.
