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Jungle Formula Mosquito Repellent Plug-In Refill 35ml

Jungle Formula Mosquito Repellent Plug-In Refill 35ml

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  • ✔️ Continuously vaporises prallethrin to repel and kill mosquitoes indoors
  • ✔️ One 35ml refill lasts up to 45 nights at 8 hours per night
  • ✔️ Hands-free overnight protection — no sprays or skin application needed
  • ✔️ Compatible with the Jungle Formula electrical plug-in unit
  • ✔️ Ideal for travel to mosquito-prone regions or UK summer use

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What Is a Mosquito Repellent Plug-In Refill?

 

If mosquitoes are disrupting your sleep or making indoor evenings uncomfortable, the mosquito repellent plug in refill from Jungle Formula offers a straightforward, hands-free solution. Designed to work with the Jungle Formula electrical plug-in unit, this 35ml refill slowly releases an insecticide vapour into the surrounding air, creating a protective environment throughout the night. It is available over the counter without a prescription and is priced at just £5.38, making it an accessible option for households and travellers alike. If you are heading abroad or simply want to protect your home during warmer months, you might also find our travel health range useful for broader trip preparation.

Mosquitoes are not merely a nuisance — in certain parts of the world, they are vectors for serious diseases including malaria, dengue fever, and chikungunya. Even in the UK, particularly during summer, mosquito bites can cause significant discomfort, localised swelling, and secondary skin infections from scratching. Having a reliable indoor repellent is a sensible precaution whether you are at home or staying in accommodation abroad.

 

How Does the Jungle Formula Plug-In Refill Work?

 

The active ingredient in this refill is prallethrin, a synthetic pyrethroid insecticide. When the refill is inserted into the compatible electrical heating unit and plugged into a mains socket, the device gently heats the liquid, causing prallethrin to vaporise and disperse into the air of the room. Here is how the process works step by step:

  • The electrical unit heats the refill liquid to a controlled temperature.
  • Prallethrin vapour is released continuously into the surrounding air.
  • The vapour acts on the nervous system of mosquitoes, causing paralysis and death or repelling them from the area.
  • Protection is maintained throughout the period the device remains switched on — typically overnight.

Pyrethroids like prallethrin are synthetic analogues of pyrethrins, which are naturally derived from chrysanthemum flowers. They are widely used in household insecticides and are considered effective at low concentrations for indoor mosquito control.

 

Who Should Use the Jungle Formula Plug-In Refill?

 

This product is suited to anyone who needs reliable indoor mosquito protection, particularly during overnight hours. It is especially relevant for:

  • Travellers staying in mosquito-prone regions where malaria or other vector-borne diseases are a risk.
  • Households in the UK experiencing mosquito activity during summer months.
  • People who prefer a non-topical repellent option and do not want to apply sprays or lotions directly to skin.
  • Those who already own the Jungle Formula electrical plug-in unit and need a replacement refill.

It is not suitable for use in rooms occupied by cats or aquarium fish, as pyrethroids can be toxic to these animals. Always ensure the room is adequately ventilated when the device is in use.

 

How Does the Jungle Formula Plug-In Refill Compare to Other Mosquito Repellents?

 

Feature Jungle Formula Plug-In Refill DEET Spray/Lotion
Application method Electrical vaporiser — no skin contact Applied directly to skin
Duration of action Up to 45 nights (8 hrs/night) 4–8 hours per application
Suitable for outdoor use? No — indoor use only Yes — indoor and outdoor
Suitable for children? Use with caution; ensure ventilation DEET products vary by age suitability

 

How Should You Store the Jungle Formula Plug-In Refill?

 

Store the refill below 25°C, away from direct sunlight, open flames, and heat sources. Keep the bottle upright and out of reach of children at all times. Do not puncture or incinerate the container, even when empty. The refill should only be used with the compatible Jungle Formula electrical plug-in unit — using it with other devices is not recommended and may be unsafe. If you are also managing skin reactions from insect bites, our skin care range includes soothing options that may help with localised irritation.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Jungle Formula Mosquito Repellent Plug-In Refill 35ml specifications
Treatment category Insect repellent / insecticide
Active ingredient Prallethrin
Mechanism of action Synthetic pyrethroid — vaporises to repel and kill mosquitoes via nervous system disruption
Route of administration Ambient air dispersion via electrical vaporiser
Pack size 35ml refill bottle
Suitable for Adults; use with caution around children and pets
UK classification General Sale / Biocidal product
Preparation Liquid refill for electrical plug-in unit
Effective against Mosquitoes (indoor)

Specifications of Jungle Formula Mosquito Repellent Plug-In Refill 35ml

 

What Is the Jungle Formula Plug-In Refill and What Is It Used For?

 

The Jungle Formula Mosquito Repellent Plug-In Refill 35ml is a liquid insecticide refill designed for use with the Jungle Formula electrical plug-in vaporiser unit. It is used to protect indoor spaces — particularly bedrooms — from mosquitoes during overnight hours. The active ingredient, prallethrin, is vaporised by the heating element in the plug-in unit and dispersed into the room air, where it acts to repel and kill mosquitoes. This type of product is particularly useful when travelling to regions where mosquito-borne illnesses are prevalent, or simply during warmer UK months when mosquito activity increases indoors.

 

What Do You Need to Know Before Using the Jungle Formula Plug-In Refill?

 

Before using this product, read the following contraindications and warnings carefully:

  • Do not use in rooms occupied by cats — pyrethroids are toxic to felines.
  • Do not use near aquariums or fish tanks, as prallethrin is highly toxic to aquatic life.
  • Ensure the room is adequately ventilated; do not use in completely sealed, unventilated spaces.
  • Keep the refill bottle and plug-in unit out of reach of children.
  • Do not use the refill with any device other than the compatible Jungle Formula plug-in unit.
  • Avoid direct skin or eye contact with the liquid refill. If contact occurs, wash immediately with soap and water or rinse eyes with clean water for at least 15 minutes.
  • If you have asthma or other respiratory conditions, consult your pharmacist before use, as inhaled insecticide vapours may trigger symptoms.
  • Do not use near open flames or heat sources other than the designated plug-in unit.

Known drug interactions with this product are not applicable in the conventional sense, as it is not taken orally or applied to skin. However, individuals with known pyrethroid hypersensitivity should avoid use. If you are unsure whether this product is appropriate for you, speak to your pharmacist.

  • No significant systemic drug interactions are documented for ambient pyrethroid exposure at recommended use levels.
  • People with known insecticide or pyrethroid allergies should not use this product.

 

How Should You Use the Jungle Formula Plug-In Refill?

 

Using this refill correctly is straightforward, but following the steps below ensures both safety and effectiveness:

  1. Remove the refill bottle from its packaging and take off the protective cap.
  2. Insert the refill bottle firmly into the compatible Jungle Formula electrical plug-in unit.
  3. Plug the unit into a standard UK mains socket (240V). Ensure the socket is at least 30cm from the floor for optimal vapour distribution.
  4. Switch the unit on. The indicator light (if present) will confirm the device is active.
  5. Leave the device running overnight or for the duration of time you require protection — typically 8 hours.
  6. Switch off and unplug the unit when protection is no longer needed or when leaving the room for extended periods.
Indication Age Group Usage Duration
Indoor mosquito protection Adults One refill per plug-in unit Up to 45 nights at 8 hrs/night
Indoor mosquito protection Children (with caution) Ensure adequate ventilation; consult pharmacist As above; monitor for irritation

 

What Are the Possible Side Effects of the Jungle Formula Plug-In Refill?

 

Side effects from ambient pyrethroid exposure at recommended levels are uncommon, but some individuals may experience irritation, particularly in poorly ventilated rooms. If you notice any of the following, switch off the device and ventilate the room immediately.

Common side effects:

  • Mild throat or nasal irritation
  • Watery or irritated eyes if the room is poorly ventilated
  • Mild coughing

Less common side effects:

  • Skin irritation or redness if the liquid refill contacts skin directly
  • Headache in sensitive individuals in enclosed spaces
  • Worsening of asthma or respiratory symptoms in susceptible individuals

If you experience a severe allergic reaction — such as difficulty breathing, swelling of the face or throat, or a widespread rash — seek emergency medical attention immediately. You can find further guidance on managing skin reactions in our first aid range.

 

How Should You Store the Jungle Formula Plug-In Refill?

 

  • Store below 25°C in a cool, dry place away from direct sunlight.
  • Keep away from open flames, sparks, and other heat sources.
  • Store upright to prevent leakage.
  • Keep out of reach and sight of children.
  • Do not store near food, drink, or animal feed.
  • Dispose of empty refill bottles responsibly in accordance with local waste regulations — do not incinerate.
  • Do not store in a bathroom or other high-humidity environment.

If you are travelling and need to pack this product, check airline regulations regarding liquid insecticide products in hand luggage before flying. For broader travel health needs, our travel health collection covers a wide range of products to keep you protected on the go.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy the Jungle Formula Mosquito Repellent Plug-In Refill online in the UK?

You can buy the Jungle Formula Mosquito Repellent Plug-In Refill 35ml directly from Cured Pharmacy online for £5.38, with fast UK delivery. It is available without a prescription as an over-the-counter product. No GP visit is required — simply add it to your basket and check out.

How does the Jungle Formula plug-in refill work in a room?

The refill contains prallethrin, a synthetic pyrethroid insecticide that is gently heated by the electrical plug-in unit and vaporised into the surrounding air. This creates an ambient protective zone that repels and kills mosquitoes throughout the room. The process is continuous while the device is switched on, making it ideal for overnight protection.

How do I insert and set up the Jungle Formula plug-in refill?

Remove the cap from the refill bottle and insert it firmly into the compatible Jungle Formula electrical plug-in unit. Plug the unit into a standard UK mains socket, ideally positioned at least 30cm from the floor. Switch it on and leave it running for the duration you need protection — typically overnight for around 8 hours.

How long does one Jungle Formula plug-in refill last?

One 35ml refill is designed to last up to 45 nights when used for approximately 8 hours per night. Actual duration may vary depending on how long you run the device each night and the ventilation level in the room. Switching the device off when not needed will help extend the life of the refill.

Is the Jungle Formula plug-in refill safe to use around children?

The plug-in unit and refill should be kept physically out of reach of children at all times. When using the device in a room where children sleep, ensure there is adequate ventilation — for example, a slightly open window. If you have concerns about using insecticide products around young children, speak to your pharmacist before use.

Can I use the Jungle Formula plug-in refill if I have asthma?

If you have asthma or any other respiratory condition, you should consult your pharmacist or GP before using this product, as inhaled insecticide vapours may potentially trigger symptoms in sensitive individuals. Ensuring good room ventilation can reduce the risk of irritation. If you experience any worsening of breathing symptoms, switch off the device immediately and ventilate the room.

Is the Jungle Formula plug-in refill safe to use around cats or pets?

Pyrethroids, including prallethrin, are known to be toxic to cats and highly toxic to fish and other aquatic animals. You should not use this plug-in in rooms where cats are present or near aquariums. Dogs are generally less sensitive to pyrethroids, but good ventilation is still advisable when pets are in the room.

What are the side effects of the Jungle Formula plug-in refill?

Most people tolerate this product well when used in a ventilated room. Some individuals may experience mild throat irritation, watery eyes, or a mild headache, particularly in poorly ventilated spaces. Direct contact with the liquid refill can cause skin irritation — wash the affected area thoroughly with soap and water if this occurs.

What should I do if I accidentally touch the liquid in the refill?

If the liquid refill contacts your skin, wash the area immediately and thoroughly with soap and water. If it contacts your eyes, rinse with clean running water for at least 15 minutes and seek medical advice if irritation persists. Our first aid range includes products that may help soothe minor skin irritation in the meantime.

Does the Jungle Formula plug-in refill protect against malaria?

This product helps reduce indoor mosquito exposure, which is one component of malaria prevention when travelling to at-risk regions. However, it should not be relied upon as the sole method of malaria prevention — the NHS recommends a combination of insect repellents, protective clothing, mosquito nets, and antimalarial medication where appropriate. Always seek travel health advice before visiting malaria-endemic areas.

What are the alternatives to the Jungle Formula plug-in refill?

Alternatives include DEET-based or picaridin-based topical mosquito repellent sprays and lotions, which are applied directly to exposed skin and are suitable for both indoor and outdoor use. Mosquito nets treated with permethrin offer another layer of protection, particularly for sleeping. The plug-in refill is specifically designed for indoor overnight use and works best as part of a broader mosquito prevention strategy, especially when travelling — browse our travel health collection for more options.

Can I use the Jungle Formula plug-in refill in a hotel room abroad?

Yes, provided you have a suitable travel adaptor for the local mains socket and the voltage is compatible — the unit is designed for UK 240V sockets, so check compatibility before travelling. The refill itself is a liquid product, so check airline regulations regarding carrying it in hand luggage before you fly. It is a practical option for hotel rooms where mosquito nets are not provided.

How long can I keep using the Jungle Formula plug-in refill?

You can continue using the plug-in refill for as long as mosquito protection is needed, replacing the refill bottle when it runs out. There is no defined maximum duration of use, as the product is intended for ongoing seasonal or travel-related use. Replace the refill promptly when the liquid level is depleted to maintain continuous protection.

Is the Jungle Formula plug-in refill suitable for use during pregnancy?

If you are pregnant, you should consult your GP or pharmacist before using any insecticide product, including this plug-in refill. Whilst ambient exposure to prallethrin at recommended levels is considered low risk, caution is always advisable during pregnancy. Ensuring good room ventilation is particularly important if you choose to use the product while pregnant.

What is the latest research on pyrethroid plug-in mosquito repellents?

Research published in peer-reviewed literature supports the effectiveness of pyrethroid-based electrical vaporisers in reducing indoor mosquito density and bite rates, particularly in tropical settings. Studies have generally found them to be well tolerated at recommended use levels in ventilated rooms. The NHS and Public Health England continue to recommend a multi-layered approach to mosquito prevention, of which indoor insecticide devices form one part.

How Should You Use the Jungle Formula Plug-In Refill?

Using this product correctly is simple, but following the steps below will ensure you get the most effective protection while keeping your household safe. Always read the product label before use and ensure the room is adequately ventilated throughout the period the device is running.

Here is a step-by-step guide to setting up and using the refill:

What Is the Correct Dose of the Jungle Formula Plug-In Refill?

This product does not have a traditional "dose" in the pharmaceutical sense — one refill bottle is used per plug-in unit at a time. The device controls the rate of vaporisation automatically, so no manual adjustment is required. Do not attempt to use more than one refill simultaneously or modify the device in any way.

When Is the Best Time to Use the Jungle Formula Plug-In Refill?

The most effective time to use this plug-in refill is overnight, as mosquitoes are typically most active during evening and night-time hours. Switch the device on approximately 15–30 minutes before you go to bed to allow the prallethrin vapour to build up to a protective concentration in the room. You can also use it during daytime hours if mosquito activity is high, provided the room remains ventilated.

If you are travelling to a malaria-risk region, begin using the plug-in from your first night in the destination to ensure continuous protection throughout your stay.

How Long Can You Use the Jungle Formula Plug-In Refill For?

There is no defined maximum duration of use for this product — you can continue using it for as long as mosquito protection is required, whether that is a single holiday or an entire summer season. Each 35ml refill provides up to 45 nights of protection at 8 hours per night. Simply replace the refill bottle when the liquid runs out to maintain uninterrupted protection.

If you notice any persistent irritation or respiratory symptoms during use, discontinue and consult your pharmacist or GP.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of the Jungle Formula Plug-In Refill?

When used as directed in a well-ventilated room, most people do not experience any significant side effects from the Jungle Formula Plug-In Refill. However, some individuals — particularly those sensitive to inhaled substances — may notice mild irritation. These effects are generally short-lived and resolve once the room is ventilated or the device is switched off.

  • Mild throat or nasal irritation
  • Watery or mildly irritated eyes
  • Mild coughing
  • Slight headache in enclosed or poorly ventilated spaces

What Are the Less Common Side Effects of the Jungle Formula Plug-In Refill?

Less commonly, some individuals may experience more noticeable reactions, particularly if the room is not adequately ventilated or if they have pre-existing sensitivities. Direct contact with the liquid refill — for example, during bottle changes — can also cause localised reactions.

  • Skin redness or irritation following direct contact with the liquid refill
  • Eye irritation or stinging if the liquid splashes into the eyes
  • Worsening of asthma or pre-existing respiratory symptoms
  • Dizziness or nausea in very poorly ventilated environments

What Are the Serious Side Effects of the Jungle Formula Plug-In Refill?

Serious adverse reactions to ambient pyrethroid exposure at recommended use levels are rare. However, if you experience any of the following, stop using the product immediately and seek urgent medical attention. These symptoms may indicate a severe allergic reaction (anaphylaxis) or significant systemic exposure.

  • Difficulty breathing or wheezing
  • Swelling of the face, lips, tongue, or throat
  • Widespread skin rash or hives
  • Severe dizziness or loss of consciousness

If you suspect poisoning — for example, if a child has ingested the liquid refill — call 999 or contact the NHS 111 service immediately and take the product packaging with you to the hospital.

What Should You Do If You Experience Side Effects?

For mild side effects such as throat irritation or watery eyes, switch off the plug-in device and open windows to ventilate the room. Symptoms should resolve within a short time once exposure ceases. If skin contact with the liquid occurs, wash the affected area thoroughly with soap and water for at least 10 minutes. For eye contact, rinse with clean running water for at least 15 minutes and seek medical advice if irritation persists.

For any side effect that concerns you or does not resolve promptly, contact your pharmacist or GP for guidance. Do not continue using the product if you experience persistent or worsening symptoms.

Can the Jungle Formula Plug-In Refill Interact With Other Medicines?

Because this product is not taken orally or applied to skin, conventional drug interactions are not a concern for most users. There are no documented interactions between ambient prallethrin vapour at recommended levels and commonly used medicines. However, if you are taking medicines that affect your respiratory system or immune response, or if you have a known hypersensitivity to pyrethroids or related compounds, consult your pharmacist before use to ensure this product is appropriate for you.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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