Indorex Defence Spray

Indorex Defence Spray
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  • 500ml £10.45


Indorex Defence Spray

... Protecting Your Homes as part of an integrated flea control program

Indorex kills adult fleas and house dust mites on contact up to 2 months after application, thanks to its unique adulticide formulation, and prevents the development of flea eggs and larvae for up to 12 months.

House dust mites can contribute to allergic diseases in dogs just as in humans, and are one of the most common allergens implicated as a trigger in dogs with atopic dermatitis. Indorex kills these mites and helps to control them in the home for a full 12 months. However, don’t forget that the faeces and body fragments of house dust mites are still thought to be potent allergens - to both dogs and humans, so regular vacuuming is essential to effectively reduce their impact.

Key Benefits:

  • 2 month adulticide
  • 12 month activity and protection
  • Pyriproxyfen is UV stable - works well in sunlit areas such as cars and conservatories
  • Acts on contact, not ingestion
  • Prevents environmental reinfestation for up to 12 months
  • 1 can treats a 3-4 bedroom home


Permethrin & Piperonyl Butoxide

Provide synergistic adulticide activity ensuring rapid and prolonged knockdown of adult fleas and house dust mites for up to 2 months.


Insect growth regulator for year long control of eggs and larvae.

Chrysanthemum cinerariaefolium:

A source of Pyrethrins, a naturally occurring insecticide

Indorex advise any toys/bedding etc to be washed on the hottest wash they can tolerate and then correctly treating the rest of the room with Indorex Spray.

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:00am - 5:45pm
  • Sat: 9:00am - 1:00pm
  • Email: [email protected]

All prices include VAT where applicable.

Reviews (55)

Summary of Reviews for Indorex Defence Spray

Overall 5
Ease Of Use
Value For Money
Absence Of Side Effects
54 out of 55 (98%) customers would recommend this product.
5 stars (45 reviews)
4 stars (9 reviews)
3 stars (0 reviews)
2 stars (1 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 works very well
Verified Purchase

By on 6 September 2021

this product is very fast acting treated suki when this spray as soon as it arrived and with in four days she had stopped scratching and she was clear of fleas and the dirt they leave in the dogs fiur very good product

Customer recommends this product

55 Excellent product
Verified Purchase

By on 4 September 2021

Great product. Tried it before and does the job extremely well. It even killed flies that entered the house too after I'd sprayed it.... bonus!

Customer recommends this product

55 Best on the market
Verified Purchase

By on 9 August 2021

It really works but I would say do it twice to make sure.

Customer recommends this product

55 Excellent
Verified Purchase

By on 5 July 2021

I buy only this product and only from viovet it works so well

Customer recommends this product

55 Indorex spray
Verified Purchase

By on 4 February 2021

This is a very good product. I have 2 long haired dogs and 3 cats. I spray the house twice a year which keeps it clear of all fleas. Also buying it through vio vets is very cheap. My vet charges twice the price.

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding Indorex Defence Spray, including answers from our team.

5 December 2020 at 12:48am



hello, i have a hamster cage that i am unable to pick up and move. can i still use this product with the hamster in the room?

  • VioVet Staff

Indorex spray must not be used with animals or people in the room as it is an aerosol spray. You can use this product on the cage area but the hamster should be temporarily relocated whilst you are treating the room, your hamster can be replaced once the room has been ventilated. Treatment involves spraying the area, waiting 30mins and then opening all windows to ventilate.

20 November 2020 at 12:08am



Is repeated use toxic to myself and my family?

Is it toxic to the cats? How long after it’s sprayed can myself and the cats go in to the room ?

  • VioVet Staff

Indorex is perfectly safe to use around people and pets as long as you follow the dosing guidelines correctly. Indorex kills fleas in the environment for up to 2 months after application so you should not need to repeat too many times, however I advise following your vet's advice on how to treat an infestation.
I have pasted the dosing guidance below for your convenience, it should answer all your questions:

Doors and windows
Before using Indorex, ensure that all of your doors and windows are closed. You should remove your pets from the area to be treated and ensure all pet’s bedding is washed on a hot cycle.

It is important that all animals are removed prior to treatment, including pet birds, reptiles, insects and spiders. Where possible, remove aquariums, vivariums and all water storage tanks (see FAQs for more information).

Naked flame
Do not spray Indorex near a naked flame or pilot light.
Prior to using Indorex on or around any upholstered furniture, you should test on an inconspicuous area of fabric

How to use
Start by shaking your can of Indorex well, remove the lid and hold the container upside down, pointing directly at the surface to be treated, at a distance of about 50cm.

Where to use
Spray directly on carpets, flooring and skirting boards and underneath any rugs or blankets, paying particular attention to any cracks and crevices. Avoid wetting furniture and carpeting, do not over-apply to polished wood surfaces. A five second burst will treat approximately one square metre.

Once you have sprayed, leave the room and wait for half an hour before ventilating the area by opening windows and doors for at least an hour.

It is vital that you vacuum all floors and upholstered furniture for 7 consecutive days after using Indorex. The vibrations from the vacuum will make sure that any unhatched pupae will hatch out and be killed by the Indorex you have used. Always empty the contents of the vacuum outside.

10 October 2020 at 9:24pm

Could this harm a rabbit


We have a house rabbit. About to take in a dog, after the death of close family member, and she has fleas. In anticipation of fleas falling onto the carpet I'm thinking of using Indorex Defence Spray. Obviously remove rabbit from house before spraying. How soon can he be returned to the room? Is it safe for him to be on the carpet? I'm concerned that the spray will come off the carpet onto his fur which he will ingest. Will this harm him? Will also be giving dog a bath as soon as she comes into the house and changing from Frontline Plus to something else as it's obviously not working.

  • VioVet Staff

Ideally the flea problem in your new dog should be sorted and resolved before bringing them into your house. However if this is not possible then I strongly advise treating both your rabbit and your dog for fleas, if they will come into contact with the same environment (e.g. carpet/bedding). As a bare minimum I would try to apply a good flea treatment onto your dog at least a day before they enter the house. This means fleas will die when they come into contact with your dog before your dog enters your house, and you may be able to prevent a full infestation settling in.

If Indorex is used as per the label then there are no issues with letting your pets, including rabbits, use the area that has been treated. I recommend reading our blog on how to clear a flea infestation for tips on products and a good treatment plan:
Help - my pet's got fleas!

If you have any further questions then please contact us on [email protected].

7 September 2020 at 6:15pm

Can i spray the dog with this product


is it possible to use this spray onto the dogs coat

  • VioVet Staff

This product is not suitable for use on animals, it should only be used in the environment to treat your home. I recommend checking out our range of flea products that are safe for use on animals directly.

20 August 2020 at 5:14pm

How to use


Can this be used on mattresses including children’s?

  • VioVet Staff

There is no need to spray human bedding as flea eggs
and larvae cannot penetrate through the fibres of mattresses. Washing
bedding and mattress protectors on a hot wash and correctly treating the
room will be sufficient. Vacuuming the mattress will remove any eggs,
larvae and pupae.

18 August 2020 at 2:04pm

Does this kill fleas and eggs in house

Does this kill fleas and eggs

Does this kill fleas and eggs in the house

  • VioVet Staff

Flea eggs/pupae are extremely hard to kill and there is no product guaranteed to do this. Indorex will kill adult fleas and also prevent larvae turning into adults by halting their life cycle. I recommend reading our blog on treating a flea infestation for a detailed guide:!?

12 December 2019 at 9:46am



Hi can you roughly advise how much I would need to treat a standard three bed semi. Have notice two fleas in last two months in same place but want to treat whole house as a precaution
Also how long after treatment can rooms be used.

  • VioVet Staff

Hello Diane,

Thank you for your question.

One can of Indorex will be enough to treat an average 3 bed semi.

You should remove pets from any room that you are spraying. 30 minutes after spraying, open the windows and ventilate for one hour before allowing pets back into the room. If you intend to spray the whole house all at once then pets should be kept outside for this time.

Hope this helps!


20 October 2019 at 5:38pm


Kelly Ray

Can my cats /dogs be in the house when I use Indorex ?

  • VioVet Staff

You should remove pets from any room that you are spraying. 30 minutes after spraying open the windows and ventilate for one hour before allowing pets back into the room. If you intend to spray the whole house all at once then pets should be kept outside for this time.

27 August 2019 at 8:50pm

Safe to use during pregnancy


Is this product safe to use during pregnancy?

  • VioVet Staff

Yes, however, sensible precautions such as avoiding inhaling fumes and washing hands after use is advised.

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