Virbac UK


Indorex Defence Household Flea Spray

Indorex® is the UK’s No. 1 Household Flea Spray*

With 95% of a flea population living in the home environment, Indorex is a vital part of any integrated flea control programme. Indorex kills adult fleas and house dust mites on contact for up to 2 months after application, and prevents the development of flea eggs and larvae for up to 12 months.

Product features :

  • Permethrin & Piperonyl Butoxide provide synergistic adulticide activity ensuring rapid knockdown of adult fleas and house dust mites for up to 2 months
  • Pyriproxyfen acts as an insect growth regulator for year long control of eggs and larvae
  • Chrysanthemum cinerariaefolium is a source of Pyrethrins, a naturally occurring insecticide  
  • UV stable – works well in sunlit areas such as cars and conservatories
  • Prevents environmental reinfestation for up to 12 months
  • A single 500ml is sufficient for an average sized 3 bedroom home
  • Winner of the Your Dog magazine award for best flea product for the home for 11 consecutive years, and the Your Cat magazine award for 7 consecutive years!

Product benefits :

  • Up to 12 months environmental flea control in a single can
  • Provides rapid knockdown and long-lasting control
  • Effective against fleas and house dust mites, a potential allergen

Frequently asked questions: 

Q: I have a fish tank which is too heavy to move - what should I do?

A: If the tank has a pump, switch it off. Cover the tank completely with two thick blankets or cling film to prevent any sprayed mist reaching the water. When spraying Indorex in the room, ensure that the nozzle is pointing downwards and away from the tank. After half an hour, ventilate the room for two hours. It will then be safe to remove the blankets and switch the pump back on.

Q: I used Indorex a few days ago and there are still fleas jumping around!

A: Flea pupae are unaffected by any insecticide flea spray. These pupae can survive in the house for over 12 months but do hatch in response to vibration, especially in warm humid weather. These newly hatched fleas will be killed within 24 hours by Indorex for up to 2 months after application. The hatching process can be accelerated with warmth and vibration by:

  • Allowing your pet to roam around your home
  • Turning up the heating
  • Thorough vacuum cleaning for 7 consecutive days, as the movement and vibration encourages the pupae to hatch, which are then removed by the vacuum cleaner

Q: I’m asthmatic - what should I do?

A: The product itself represents no particular danger but the propellant is carbon dioxide and increased levels of this gas can be associated with asthma attacks. Consult your doctor and preferably get someone else to spray for you. Ventilate rooms well before returning.

Q: Is it safe for my baby (crawling on the floor) after spraying?

A: Yes - Indorex has been approved for amateur domestic use. Once dry (allow around an hour), Indorex binds to all surfaces in such a way that it will not come off onto the skin.

Q: Is it safe to use if I’m pregnant?

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

Q: What about human bedding?

A: 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.


*Kynetec VetTrak Sales Data March 2019

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