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Heavy Horse Rugs: How to Choose the Right Rug for Bigger Horses

Posted in: Practical Horse Rug Guides, Horse Rug Sizing and Fit

10/02/2026

Choosing the right rug for a heavy horse is about more than simply going up a size. Learn what to look for in fit,...

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Posted in: Practical Horse Rug Guides, Seasonal Horse Rug Care

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Learn what makes a great Queensland itch rug, including coverage, fit, breathability and insect-repellent protection,...

Why Is My Horse So Itchy? Causes of Rubbing & How to Help

Posted in: Practical Horse Rug Guides, Seasonal Horse Rug Care

09/24/2026

Is your horse rubbing its mane, tail or body? Explore common causes of itching, including biting insects and...

Fly Rugs & Fly Sheets for Horses: How to Choose the Right Insect Protection

Posted in: Product Technology, Practical Horse Rug Guides

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Learn how fly rugs, fly sheets and insect-repellent horse rugs protect horses from flies and biting insects, and...

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Posted in: Practical Horse Rug Guides, Seasonal Horse Rug Care

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Compare stable horse rugs and turnout rugs, including their pros, cons, warmth, waterproofing and everyday...

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Heavy Horse Rugs: How to Choose the Right Rug for Bigger Horses

Posted in: Practical Horse Rug Guides, Horse Rug Sizing and Fit

10/02/2026

Choosing the right rug for a heavy horse is about more than simply going up a size. Learn what to look for in fit,...

Horse Rugs for Queensland Itch: Choosing the Right Protection

Posted in: Practical Horse Rug Guides, Seasonal Horse Rug Care

09/25/2026

Learn what makes a great Queensland itch rug, including coverage, fit, breathability and insect-repellent protection,...

Why Is My Horse So Itchy? Causes of Rubbing & How to Help

Posted in: Practical Horse Rug Guides, Seasonal Horse Rug Care

09/24/2026

Is your horse rubbing its mane, tail or body? Explore common causes of itching, including biting insects and...

Fly Rugs & Fly Sheets for Horses: How to Choose the Right Insect Protection

Posted in: Product Technology, Practical Horse Rug Guides

09/21/2026

Learn how fly rugs, fly sheets and insect-repellent horse rugs protect horses from flies and biting insects, and...

Stable Rugs vs Turnout Rugs

Posted in: Practical Horse Rug Guides, Seasonal Horse Rug Care

08/19/2026

Compare stable horse rugs and turnout rugs, including their pros, cons, warmth, waterproofing and everyday...

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Fly Rugs & Fly Sheets for Horses: How to Choose the Right Insect Protection

❤️ How Do Fly Rugs & Fly Sheets Protect Horses?

A fly rug or fly sheet works primarily by creating a physical barrier between your horse and flies, mosquitoes, midges and other irritating insects.

Unlike heavier horse rugs designed for warmth or weather protection, fly rugs are made from lightweight, breathable fabrics or mesh that allow air to circulate while covering vulnerable areas of the horse’s body.

For many horses, this simple physical coverage can make a big difference during the warmer months. A well-fitting fly rug can help reduce direct contact with insects and give your horse relief from the constant irritation that can lead to tail swishing, stamping, skin twitching and biting at their body.

You may see these rugs described as fly rugs, fly sheets, mesh horse rugs, summer mesh rugs or insect protection rugs. While the terminology varies, they share the same basic purpose: providing breathable physical coverage between your horse and insects.

However, not all fly rugs provide the same type of protection.

Traditional mesh fly rugs rely primarily on physical coverage, while newer insect-repellent horse rugs can combine that physical barrier with technology designed to help deter insects from landing and biting.

❤️ Physical Fly Protection vs Insect-Repellent Fly Rugs

Traditional fly rugs and fly sheets protect your horse primarily through physical coverage. The fabric or mesh creates a barrier that helps prevent flies and other insects from reaching the horse’s skin, while still allowing air to circulate.

For many horses, good physical coverage is all they need. A well-designed mesh fly rug with generous body coverage, a secure neck and good belly protection can provide effective everyday protection throughout the warmer months.

Insect-repellent horse rugs take a different approach by combining that physical barrier with an additional form of protection.

Rather than relying on coverage alone, repellent rugs use insect-repellent technology designed to help discourage insects from landing on the horse and remaining on the fabric.

Cotton hybrid horse rugs offer another summer option, combining a breathable cotton topline with mesh sides for airflow and physical insect protection.

In insect-repellent designs, this hybrid construction can also be combined with repellent technology for an additional layer of protection.

This means there are two distinct approaches to consider:

Traditional fly Mesh rug or Cotton fly sheet:
Provides a physical barrier between your horse and insects.

Insect-repellent fly rug:
Provides physical coverage plus insect-repellent protection designed to help reduce insect landings and bites.

Neither approach automatically makes one rug the right choice for every horse. The best option depends on your horse, the insects in your area, the amount of coverage required and how badly your horse is affected during fly season.

For horses that are particularly bothered by flies and biting insects, combining physical fly protection with insect-repellent technology can provide an additional layer of protection.

❤️ Learn More About Fly & Insect Protection

❤️ Shop Fly & Insect Protection

❤️ What Is IR3535 & How Does It Work in a Horse Rug?

IR3535 is an insect-repellent technology designed to help deter insects from landing and biting.

In Love My Horse IR3535 rugs, the insect-repellent technology is built into the fabric, so the rug provides two forms of protection at the same time: the physical barrier created by the rug itself and the additional protection provided by IR3535.

This is particularly useful when a horse is dealing with persistent flies and biting insects. While a traditional mesh fly rug relies on the fabric to create a barrier between the insect and the horse, an IR3535 insect-repellent horse rug is designed to also help reduce insects landing and remaining on the rug.

Importantly, IR3535 does not replace good rug design and coverage. The fit of the rug, airflow through the mesh and the areas of the horse that are physically protected still matter. The repellent technology provides an additional layer of insect protection alongside that physical coverage.

At Love My Horse, we use IR3535 fabric across several different rug designs so you can choose the type of protection that best suits your horse and conditions — from a full Dura Mesh IR3535 fly rug through to cotton hybrid and 600D hybrid IR3535 mesh rugs.

Our IR3535 range is also available across Standard, Mini and Clydesdale/heavy horse sizing, because effective fly protection still starts with a rug that fits the horse properly.

❤️ IR3535 vs Permethrin Horse Rugs — What's the Difference?

When researching insect-repellent horse rugs, you may also come across rugs described as permethrin-treated fly rugs. While both are designed to provide additional insect protection alongside the physical barrier of a rug, IR3535 and permethrin are different technologies.

Permethrin is an insecticide used in a range of insect-control applications, including some treated fabrics and horse products. Its action against insects differs from IR3535, which is used as an insect repellent.

Love My Horse has chosen IR3535 technology for our insect-repellent rug range. In our rugs, the technology is built into the fabric, combining repellent protection with the physical coverage of the rug itself.

Whichever type of insect-protection rug you are considering, it is worth looking beyond the words “insect repellent” and checking exactly what technology is being used, how it is incorporated into the fabric, and what testing supports the product claims.For LMH, those details matter.

We want horse owners to understand what is actually in the rug they are putting on their horse — and what it has been designed to do.

❤️ Which Fly Rug Is Right for Your Horse?

There isn't one fly rug that will suit every horse or every Australian summer.

Some horses cope extremely well in a traditional mesh fly rug, where the priority is lightweight physical coverage and maximum airflow. Others are far more bothered by flies, mosquitoes, midges and biting insects and may benefit from the additional protection offered by an insect-repellent fly rug.

A traditional fly rug or fly sheet may be a good choice when your horse mainly needs a lightweight physical barrier from flies, you want plenty of airflow through the rug, and biting insects are not a major problem.

An IR3535 insect-repellent fly rug may be worth considering when your horse is particularly bothered by insects, biting insects are a significant problem in your area, or you want to combine physical coverage with an additional repellent component.

Your horse's environment matters too. Insect pressure can vary enormously depending on the season, rainfall, humidity, nearby water, vegetation and where your horse spends their time.

That is why the best fly protection isn't necessarily about choosing the rug with the most features.

It's about choosing the right combination of coverage, airflow, durability and insect protection for your individual horse.

❤️ Choosing Fly Rug Coverage & Fit

A fly rug can only protect the areas of your horse that it actually covers — and that makes fit and coverage just as important as the fabric itself.

Look for a fly rug that provides generous coverage without restricting your horse's natural movement. The chest should sit comfortably without pulling across the shoulders, the neck should provide good coverage when the horse lowers its head, and the body of the rug should have enough depth to protect the sides of the horse.

Belly coverage can also be particularly valuable during fly season. Flies and biting insects don't restrict themselves to the horse's topline, so protecting the underside of the horse can make a significant difference for horses that are particularly sensitive to insects.

Fit becomes particularly important for horses that don't conform to standard proportions. Minis, ponies, broad-chested horses and heavy breeds can all have very different body shapes, which is why simply going up or down a rug size doesn't always solve a fitting problem.

At Love My Horse, our fly rug range includes options specifically designed across Mini, Standard and Clydesdale/heavy horse sizing, so the aim isn't simply to cover the horse — it's to provide practical insect protection in a rug shaped to fit them properly.

Rug Type	Best For	Protection
Soft Mesh	Everyday summer coverage	Physical fly barrier
Dura Mesh	Horses needing tougher mesh	Physical fly barrier
IR3535 Dura Mesh	Higher insect pressure	Physical + repellent
Cotton Topline + IR3535	Sun/topline + insect protection	Physical + repellent
600D Topline + IR3535	Changeable/wet weather	Physical + repellent

❤️ Do Insect-Repellent Horse Rugs Replace Fly Sprays?

Not necessarily. Even a well-designed fly rug cannot cover every part of your horse, so exposed areas such as the face and lower legs may still need additional protection when insects are particularly active.

A fly rug or fly sheet provides physical coverage, while an IR3535 insect-repellent rug adds repellent protection to the areas covered by the rug. Fly sprays or other suitable insect-control products can then be used on exposed areas when required.

The right combination will depend on your horse, their sensitivity to insects and the conditions in your area.

Traditional Fly Rug

Best for everyday physical fly protection

Creates a physical barrier between your horse and insects
Lightweight, breathable mesh for summer airflow
Ideal where flies are the main concern
Available in different mesh weights depending on durability needs

LMH options: Soft Mesh and Dura Mesh

IR3535 Insect-Repellent Fly Rug

Physical coverage + insect-repellent technology

IR3535 technology is built into the fabric
Helps deter insects from landing and biting
Adds repellent protection to the physical barrier of the rug
Ideal for horses experiencing higher insect pressure

LMH options: IR3535 Dura Mesh, Cotton Topline + IR3535 Mesh and 600D Topline + IR3535 Mesh

IR3535 Test Results

Tested insect-repellent performance

95% reduction in insect landings
94% protection against bites
88% repellent performance retained after 10 washes

Results are based on testing of the IR3535 fabric/technology and should not be interpreted as a guarantee of identical results for every horse or environment.

❤️ Frequently Asked Questions About Fly Rugs & Insect Protection

What is the difference between a fly rug and a fly sheet?

The terms fly rug and fly sheet are often used interchangeably. Both describe lightweight horse rugs designed to provide a physical barrier between the horse and flies and other insects while allowing airflow during warmer weather.

Do fly rugs really stop flies biting horses?

A traditional fly rug helps by creating a physical barrier between insects and the horse's skin. Coverage, mesh construction and fit all affect how much protection the rug provides.
Learn more: Do Fly Rugs Really Work? How They Protect Horses from Flies and Midges.

What is an insect-repellent horse rug?

An insect-repellent horse rug combines the physical coverage of a fly rug with insect-repellent technology designed to help deter insects from landing and biting.

What is IR3535 in a horse rug?

IR3535 is an insect-repellent technology. In Love My Horse IR3535 rugs, the technology is built into the fabric, adding repellent protection to the physical barrier provided by the rug.

What is the difference between IR3535 and permethrin horse rugs?

They use different approaches to insect protection. IR3535 is an insect repellent, while permethrin is an insecticide.
Learn more: IR3535 vs Permethrin Horse Rugs – What’s the Difference?

Can IR3535 horse rugs be washed?

Yes. LMH IR3535 rugs can be washed following the recommended care instructions. Testing of the IR3535 fabric showed 88% repellent performance retained after 10 washes.

Do I still need fly spray with an insect-repellent horse rug?

Possibly. A rug doesn't cover every part of the horse, so exposed areas such as the face and lower legs may still require additional insect protection depending on your horse and local insect conditions.

Which fly rug is best for my horse?

That depends on your horse, environment and the level of insect pressure. A traditional mesh fly rug may provide all the protection some horses need, while horses particularly bothered by insects may benefit from an IR3535 insect-repellent fly rug.

Are IR3535 fly rugs available for Minis and Clydesdales?

Yes. Love My Horse offers IR3535 insect-repellent rug options across Mini, Standard and Clydesdale/heavy horse sizing, so horses with very different body shapes can have appropriate fit and coverage.

❤️ Final Word

Choosing the right fly rug or fly sheet comes down to your horse, their environment and the level of insect protection they need.

For some horses, a lightweight mesh rug providing good physical coverage may be all that's required. For others, particularly those bothered by persistent flies and biting insects, an IR3535 insect-repellent horse rug can provide an additional layer of protection.

Whatever you choose, good fit, breathable coverage and comfort should always come first.

Need help choosing the right fly rug for your horse?
Explore the Love My Horse fly and insect-protection range, or contact us for help with sizing and selecting the best option for your horse.

❤️ Explore More Fly & Insect Protection Guides

Learn more about fly rugs, insect protection and IR3535 technology in our Horse Rug Knowledge Centre.

Browse the Horse Rug Knowledge Guide →

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Posted in: Product Technology, Practical Horse Rug Guides