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Bed Bug & Dust Mite Killer Spray - 300ml

Bed Bug & Dust Mite Killer Spray - 300ml

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  • ✔️ Kills bed bugs and dust mites on direct contact
  • ✔️ Residual action protects treated surfaces for days
  • ✔️ Targets mattress seams, bed frames, and soft furnishings
  • ✔️ Suitable for both active infestations and dust mite prevention
  • ✔️ Ready-to-use 300ml spray — no mixing or dilution needed

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What Is Bed Bug Killer Spray and How Can It Help You?

 

Waking up with unexplained bites, or noticing tiny dark spots on your mattress seams? You might be dealing with a bed bug infestation — and it's far more common than most people realise. The bed bug killer spray from Cured Pharmacy is a 300ml household insecticide spray designed to tackle both bed bugs (Cimex lectularius) and dust mites (Dermatophagoides species) in your home. At just £9.99, it offers an accessible first-line option before you consider professional pest control. If you're also managing allergy symptoms triggered by dust mites, it's worth exploring our allergy and hay fever range alongside this spray.

Bed bugs are small, reddish-brown insects that feed on human blood, typically at night. Dust mites, while invisible to the naked eye, are a leading trigger of allergic rhinitis and asthma in the UK. The NHS notes that dust mites are found in most homes and thrive in warm, humid environments — particularly in mattresses, pillows, and upholstered furniture. Addressing both pests together makes practical sense.

 

How Does the Bed Bug & Dust Mite Killer Spray Work?

 

This spray uses a synthetic pyrethroid insecticide as its active mechanism. Pyrethroids are synthetic versions of pyrethrins, naturally occurring compounds derived from chrysanthemum flowers. They work by targeting the nervous systems of insects, causing rapid paralysis and death on contact.

  • The insecticide binds to sodium channels in the insect's nerve cell membranes
  • This disrupts normal nerve signal transmission, causing continuous nerve firing
  • The insect becomes paralysed and dies shortly after exposure
  • A residual film on treated surfaces continues to act on insects that come into contact with it over subsequent days

Because dust mites and bed bugs both live in soft furnishings and bedding, the spray is formulated to penetrate fabric fibres and reach insects hiding in seams, tufts, and crevices — areas that are difficult to clean by vacuuming alone.

 

Who Should Use This Bed Bug & Dust Mite Spray?

 

This spray is suitable for adults who have identified or suspect a bed bug or dust mite problem in their home. It is particularly useful for people who want to act quickly before an infestation worsens, or those managing dust mite-related allergies in the household.

  • Adults dealing with a confirmed or suspected bed bug infestation
  • People with dust mite allergies looking to reduce allergen load in bedding and soft furnishings
  • Households returning from travel where bed bug exposure may have occurred
  • Landlords or property managers treating rental accommodation between tenancies

It is not intended for use on skin or as a personal insect repellent. If you are pregnant, breastfeeding, or have a respiratory condition such as asthma, speak to your pharmacist before use.

 

How Does This Spray Compare to Other Bed Bug Treatments?

 

Feature Cured Pharmacy Bed Bug & Dust Mite Killer Spray 300ml Professional Pest Control
Cost £9.99 £200–£500+ per treatment
Ease of use Ready-to-use spray — no mixing required Requires professional visit and preparation
Targets dust mites Yes Not always included
Suitable for home use Yes — OTC, no prescription needed Yes, but requires scheduling

 

Is This Spray Safe to Store at Home?

 

Store the spray below 25°C, away from direct sunlight, heat sources, and open flames. The canister is pressurised, so never puncture or incinerate it — even when empty. Keep it out of reach of children and pets at all times. If you're also looking for products to manage skin reactions from insect bites, our skin care range includes soothing creams and gels 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.

Bed Bug & Dust Mite Killer Spray 300ml specifications
Treatment category Household insecticide / pest control
Mechanism of action Synthetic pyrethroid — disrupts insect nervous system on contact
Effective against Bed bugs (Cimex lectularius), dust mites (Dermatophagoides spp.)
Suitable for Adults; household use on mattresses, soft furnishings, bed frames
Active ingredient Synthetic pyrethroid insecticide
Pack size 300ml
UK classification General sale / household insecticide product
Preparation Ready-to-use aerosol/pump spray
Route of administration Topical surface spray — not for use on skin

Specifications of Bed Bug & Dust Mite Killer Spray 300ml

 

What Is the Bed Bug & Dust Mite Killer Spray and What Is It Used For?

 

The Cured Pharmacy Bed Bug & Dust Mite Killer Spray 300ml is a household insecticide product used to eliminate bed bugs and dust mites from mattresses, bed frames, skirting boards, carpets, and upholstered furniture. It is not a medicine for human use — it is applied to surfaces and fabrics to kill insects and arachnids that may be causing bites or allergic reactions in the home.

Dust mites are a well-recognised trigger for allergic conditions including perennial allergic rhinitis and asthma. The NHS advises that reducing dust mite exposure through regular cleaning and the use of appropriate treatments can help manage symptoms. Bed bugs, meanwhile, cause itchy, red bite marks and significant psychological distress. Treating your home promptly is important to prevent the infestation from spreading.

 

What Do You Need to Know Before Using This Spray?

 

Before using this spray, read the label carefully. There are important contraindications and precautions to be aware of.

Do not use this spray if:

  • You are allergic to pyrethroids, pyrethrins, or any other ingredient in the product
  • You have severe asthma or a significant respiratory condition — seek medical advice first
  • You are pregnant or breastfeeding — consult your pharmacist or GP before use
  • The product will come into direct contact with food, food preparation surfaces, or water sources
  • You intend to use it near fish tanks or aquatic environments — pyrethroids are highly toxic to aquatic life

Warnings and precautions:

  • Keep children and pets out of the treated room during application and until surfaces are fully dry
  • Cats are particularly sensitive to pyrethroid compounds — ensure thorough ventilation and drying before allowing cats back into the area
  • Wear gloves during application and wash hands thoroughly afterwards
  • Do not spray near open flames, pilot lights, or electrical sockets
  • Ventilate the room well during and after use

Known interactions:

  • No known drug interactions when used as a surface spray as directed
  • Do not mix with other insecticide products unless directed by a professional

 

How Should You Use the Bed Bug & Dust Mite Killer Spray?

 

Using the spray correctly is essential for it to be effective. Follow these steps carefully each time you treat an area.

  1. Remove all bedding, pillowcases, and covers from the mattress and wash them at 60°C or above to kill any insects present
  2. Vacuum the mattress, bed frame, and surrounding floor thoroughly, then dispose of the vacuum bag immediately in a sealed bag outside
  3. Shake the spray bottle well before use
  4. Hold the nozzle approximately 25–30cm from the surface to be treated
  5. Spray evenly across the mattress surface, paying particular attention to seams, tufts, and edges
  6. Treat the bed frame, headboard, skirting boards, and any cracks or crevices nearby
  7. Leave the room and allow the treated surfaces to dry completely — this typically takes 1–2 hours
  8. Ventilate the room by opening windows before re-entering
  9. Do not replace bedding until the mattress is fully dry
Indication Age Group Application Frequency
Bed bug infestation Adults (applying the product) Spray to mattress, bed frame, skirting boards Repeat after 7–14 days if infestation persists
Dust mite reduction Adults (applying the product) Spray to mattress and soft furnishings Every 4–6 weeks as a preventative measure

If you are also managing travel-related pest concerns, our travel health range includes products that may complement your pest prevention routine when away from home.

 

What Are the Possible Side Effects of This Spray?

 

As with any insecticide product, there is a possibility of side effects, particularly if the product is used incorrectly or in a poorly ventilated space. The following are the most commonly reported effects in people who have been exposed to pyrethroid-based sprays.

Common side effects (if exposed to the spray):

  • Mild skin irritation or redness if the spray contacts skin directly
  • Temporary tingling or numbness of the skin (paraesthesia) after skin contact
  • Eye irritation if spray enters the eyes
  • Mild coughing or throat irritation if inhaled in an enclosed space

Less common side effects:

  • Headache following prolonged exposure in a poorly ventilated room
  • Nausea if significant amounts are accidentally inhaled
  • Allergic skin reaction (contact dermatitis) in individuals sensitive to pyrethroids

If you accidentally get the spray in your eyes, rinse immediately with plenty of clean water for at least 15 minutes and seek medical advice. If swallowed, do not induce vomiting — contact NHS 111 or your nearest A&E immediately.

 

How Should You Store the Bed Bug & Dust Mite Killer Spray?

 

Correct storage keeps the product effective and safe for everyone in your household. If you're also storing other household health products, our first aid range includes guidance on safe home medicine storage.

  • Store below 25°C in a cool, dry place away from direct sunlight
  • Keep away from heat sources, open flames, and electrical equipment
  • Do not puncture or incinerate the container, even when empty
  • Keep out of reach and sight of children at all times
  • Do not store near food, drink, or animal feed
  • Check the expiry date on the base of the container before use

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 bed bug killer spray online in the UK?

You can buy the Cured Pharmacy Bed Bug & Dust Mite Killer Spray 300ml directly from curedpharmacy.com for just £9.99. It is available without a prescription and is dispatched to UK addresses quickly. No GP visit or referral is needed — simply add it to your basket and check out.

How does bed bug killer spray work on insects?

The spray contains a synthetic pyrethroid insecticide that targets the nervous system of bed bugs and dust mites on contact, causing rapid paralysis and death. It also leaves a residual film on treated surfaces that continues to act on insects that walk across them in the days following application. This dual action — immediate kill plus residual protection — makes it effective for both active infestations and ongoing prevention.

How do I use the Bed Bug & Dust Mite Killer Spray step by step?

Start by stripping and washing all bedding at 60°C or above, then vacuum the mattress and bed frame thoroughly. Shake the bottle, hold it 25–30cm from the surface, and spray evenly across the mattress — focusing on seams, tufts, and edges — as well as the bed frame and nearby skirting boards. Leave the room to ventilate for at least one to two hours and allow all surfaces to dry completely before replacing bedding or allowing children and pets back in.

Is this spray safe to use on mattresses and bedding?

Yes, the spray is formulated for use on mattresses, bed frames, and soft furnishings, but you must allow the mattress to dry fully before sleeping on it. Do not spray directly onto bedding that will be in immediate contact with skin, and always replace freshly laundered bedding after the mattress has dried. If you have sensitive skin or a known allergy to pyrethroids, speak to your pharmacist before use.

How long does it take for the spray to kill bed bugs?

The spray acts on contact, so bed bugs and dust mites that are directly exposed to the product are killed quickly — often within minutes. The residual effect on treated surfaces can continue to work for several days after application. For heavy infestations, a repeat treatment after 7–14 days is recommended to catch any newly hatched eggs that were not affected by the first application.

Is the spray safe to use around children and pets?

Children and pets — especially cats — should be kept out of the treated room during application and until all surfaces are completely dry and the room has been ventilated. Pyrethroid compounds are particularly toxic to cats, so take extra care if you have feline pets in the home. Once the area is dry and aired, it is generally safe for the whole household to re-enter.

What are the side effects of using bed bug killer spray?

If the spray contacts your skin, you may experience mild irritation, redness, or a temporary tingling sensation. Inhaling the spray in a poorly ventilated room can cause throat irritation, coughing, or a headache. If you get the spray in your eyes, rinse immediately with clean water for at least 15 minutes and seek medical advice — and if swallowed, contact NHS 111 straight away.

Can I use this spray if I have asthma or a respiratory condition?

If you have asthma or another respiratory condition, you should speak to your GP or pharmacist before using any aerosol insecticide spray, as inhaling the product — even briefly — could trigger symptoms. It may be advisable to have someone else apply the spray while you remain out of the property, and to ensure thorough ventilation before you return. Managing dust mite allergens is important for asthma control, so discuss the safest approach with your healthcare team.

Who is eligible to use this bed bug and dust mite spray?

This spray is suitable for use by adults in domestic settings where bed bugs or dust mites have been identified or are suspected. It is not suitable for use on skin, and it should not be applied by pregnant or breastfeeding individuals without prior pharmacist or GP advice. People with known pyrethroid allergies should avoid this product entirely and consider alternative pest control methods.

What happens if I only treat the mattress and not the rest of the room?

Treating only the mattress is unlikely to eliminate a bed bug infestation fully, as bed bugs hide in bed frames, headboards, skirting boards, carpet edges, and even behind wall sockets. For the best results, treat all potential hiding spots in the room systematically. If the infestation is widespread or persists after two treatments, professional pest control is advisable.

What are the alternatives to bed bug killer spray?

Alternatives include heat treatment (washing bedding at 60°C+, using a tumble dryer on high heat), mattress encasements designed to trap and starve bed bugs, diatomaceous earth powder applied to crevices, and professional pest control services for severe infestations. For dust mite-related allergies, allergen-proof pillow and mattress covers are widely recommended alongside insecticide treatments — and you can also explore our allergy and hay fever range for symptom relief.

How often should I use the spray to prevent bed bugs coming back?

For active infestations, a repeat application after 7–14 days is recommended to target any newly hatched insects. As a preventative measure — particularly if you travel frequently or live in a high-risk property — treating mattresses and soft furnishings every four to six weeks can help keep dust mite populations low. Always follow the label instructions and do not exceed the recommended frequency of use.

Can this spray be used in hotels or rented accommodation?

Yes, the spray can be used in rented accommodation or when travelling, though you should always check with the property owner or manager before treating rented furnishings. If you are concerned about bed bug exposure during travel, our travel health range includes additional products to help protect you while away from home. Treating your luggage and clothing promptly after returning from a trip can also help prevent bringing bed bugs home.

How long can you keep using bed bug killer spray?

You can use the spray as needed for active infestations, following the recommended repeat application schedule on the label. For long-term dust mite management, periodic use every four to six weeks is reasonable, but you should also combine this with non-chemical measures such as regular vacuuming, washing bedding at high temperatures, and using allergen-proof covers. Check the expiry date on the container and do not use the product beyond this date.

What does the latest research say about pyrethroid sprays for bed bugs?

Research published in pest management literature indicates that pyrethroid resistance is an increasing concern in some bed bug populations, particularly in areas with heavy insecticide use. This means that in some cases, a single pyrethroid-based spray may not eliminate all insects, and combining chemical treatment with non-chemical methods (heat, vacuuming, encasements) gives the best overall results. If you suspect resistance — for example, if bugs survive repeated treatments — contact a professional pest controller for advice on alternative insecticide classes.

How Should You Use the Bed Bug & Dust Mite Killer Spray?

Before you begin, prepare the room properly — this makes a real difference to how effective the treatment is. Strip all bedding and wash it at 60°C or above, and vacuum the mattress, bed frame, and surrounding floor thoroughly. Dispose of the vacuum bag immediately in a sealed bag placed outside your home.

What Is the Correct Dose of the Bed Bug & Dust Mite Killer Spray?

There is no fixed "dose" in the traditional medical sense — the spray is applied to surfaces rather than taken internally. The key is to apply enough product to cover the surface evenly without over-saturating it. Always follow the label instructions for the specific surfaces you are treating.

When Is the Best Time to Use the Bed Bug & Dust Mite Killer Spray?

The best time to apply the spray is during the day, when you have several hours before the room needs to be used again. This gives the product time to dry fully and the room time to ventilate properly before anyone sleeps in the treated space. Avoid applying the spray late at night when you need to return to the room quickly.

If you are treating a child's bedroom, plan the application for a morning when the child will be out of the house for the day — for example, during school hours — so there is ample time for drying and ventilation before bedtime.

How Long Can You Use the Bed Bug & Dust Mite Killer Spray For?

For active infestations, use the spray as needed, following the recommended repeat application interval of 7–14 days. Do not apply more frequently than directed on the label. For ongoing dust mite management, periodic use every four to six weeks is appropriate when combined with regular vacuuming and high-temperature laundering of bedding.

Always check the expiry date printed on the base of the container before use, and discard the product safely if it has passed this date. If an infestation persists after two or three treatment cycles, seek advice from a professional pest controller rather than continuing to increase the frequency of application.

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 Bed Bug & Dust Mite Killer Spray?

When used correctly as a surface spray, most people do not experience any side effects. However, accidental skin contact or exposure in a poorly ventilated room can cause some mild reactions. These are generally short-lived and resolve once you move to fresh air or rinse the affected area.

  • Mild skin irritation, redness, or itching if the spray contacts bare skin
  • Temporary tingling or numbness of the skin (paraesthesia) at the point of contact
  • Eye irritation, watering, or redness if spray enters the eyes
  • Mild coughing or throat irritation if the spray is inhaled briefly

What Are the Less Common Side Effects of the Bed Bug & Dust Mite Killer Spray?

Less commonly, some individuals may experience more noticeable reactions, particularly if they are sensitive to pyrethroid compounds or if exposure is prolonged. These effects are more likely if the product is used in a small, unventilated room without adequate precautions.

  • Headache following prolonged exposure in an enclosed space
  • Nausea or dizziness if significant amounts are accidentally inhaled
  • Contact dermatitis — an allergic skin reaction causing a rash, blistering, or swelling — in individuals with pyrethroid sensitivity
  • Sneezing or nasal irritation during or shortly after application

What Are the Serious Side Effects of the Bed Bug & Dust Mite Killer Spray?

Serious side effects are rare when the product is used as directed, but they can occur if the spray is swallowed, if large amounts are inhaled, or if a person has a severe allergic reaction. Signs of a serious reaction include difficulty breathing, swelling of the face or throat, severe skin blistering, or loss of consciousness. These require immediate medical attention.

If the spray is swallowed, do not induce vomiting. Contact NHS 111 or go to your nearest A&E immediately, and take the product container with you so medical staff can identify the ingredients. If the spray enters the eyes and irritation persists after rinsing, seek urgent medical advice.

What Should You Do If You Experience Side Effects?

If you experience skin irritation, move away from the treated area, remove any contaminated clothing, and wash the affected skin thoroughly with soap and water. For eye exposure, rinse with clean running water for at least 15 minutes. If you inhale the spray and feel unwell, move to fresh air immediately and rest. Most mild symptoms will resolve within a short time once exposure has stopped.

For persistent or worsening symptoms — or if you are at all concerned — contact your pharmacist or GP. In an emergency, call 999 or go to A&E. Always keep the product container to hand so you can provide full ingredient information to any healthcare professional treating you.

Can the Bed Bug & Dust Mite Killer Spray Interact With Other Products?

As a surface-applied insecticide rather than an ingested medicine, there are no known drug interactions with medications you may be taking. However, you should not mix this spray with other insecticide products or household chemicals unless specifically directed to do so, as this could produce unpredictable reactions or reduce the effectiveness of both products. Keep the spray away from aquatic environments — pyrethroid compounds are highly toxic to fish and other aquatic organisms, even in very small quantities.

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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