Independent comparisons. We may earn from shop links. More info

Flea spray buying guide

Updated: 23 October 2026

You have searched flea spray and the results mix a 500 ml household aerosol with a 60 ml bottle meant for a cat’s coat. Those are different jobs, and the wrong one either leaves the carpet untreated or puts a room insecticide on an animal. This flea spray buying guide is the decision before any score. The [flea spray comparison](/hub/pest-control/flea-spray) ranks seven amazon.co.uk listings. Products Compared did not run a lab test. Prices are the shelf figures on those listings, in GBP, and a qualifying purchase can earn a commission at no extra cost to you. Updated 23 October 2026 by the Products Compared editorial team.

You have searched flea spray and the results mix a 500 ml household aerosol with a 60 ml bottle meant for a cat’s coat.

Our top picks

Virbac Virbac Indorex Defence, 500 ml

Best overall

Virbac Virbac Indorex Defence, 500 ml
9.2/10about £13.63
View offer
FRONTLINE FRONTLINE HomeGard, 500 ml

Best value

FRONTLINE FRONTLINE HomeGard, 500 ml
8.4/10about £11.24
View offer
LIXINGLY LIXINGLY coat spray, 100 ml

Alternative

LIXINGLY LIXINGLY coat spray, 100 ml
7.6/10about £8.49
View offer
On this page
  1. 1.Two flea sprays, two jobs
  2. 2.What to look for on the can
  3. 3.Price bands on amazon.co.uk
  4. 4.Conflicts in this set

Two flea sprays, two jobs

A household flea spray here is an aerosol for carpets, rugs, soft furnishings and pet bedding. Virbac Indorex Defence 500 ml is £13.63, the Virbac twin is £24.49, an Indorex-branded twin is £25.34, FRONTLINE HomeGard is £11.24, and Zero In’s 300 ml twin is £8.99. HomeGard says never spray it on animals. The coat listings are LIXINGLY, 100 ml of peppermint oil and eugenol at £8.49, and Isabella’s Clearly CATS, 60 ml of lavender and rosemary at £19.99. Neither gives a room area. HSE treats a home insect-killer as a biocide, under GB BPR in Great Britain and EU BPR in Northern Ireland, while a product that kills fleas on an animal may be a veterinary medicine. If the basket holds both, read household flea spray versus a spray for the pet.

What to look for on the can

Blue Cross tells you to vacuum, then use an insecticide spray that contains an insect growth regulator, aimed at eggs and larvae. Virbac Indorex names pyriproxyfen. HomeGard’s bullets name (S)-methoprene, while the active field says only methoprene. Zero In and the two coat sprays do not name one. If the label is silent, you are not buying the specification Blue Cross describes. Coverage is the listing’s claim, not a measurement of your floor. Indorex says one 500 ml can treats about a three-to-four-bedroom house, though reviewers who sprayed every crevice opened a second can. Zero In says each 300 ml can treats up to 15 square metres. Frontline’s UK page says six months, not 12. HomeGard says pets stay out until dry, about one hour, then you air the room. If you have a cat, read flea spray if you have cats before you treat re-entry as optional.
Virbac Virbac Indorex Defence, 500 ml

Testsieger

Virbac Virbac Indorex Defence, 500 ml
9.2/10about £13.63
View offer

Price bands on amazon.co.uk

Around £8 to £9, LIXINGLY at £8.49 is a 100 ml coat spray and Zero In at £8.99 is two 300 ml household aerosols. Those shelf prices are not the same purchase. A coat bottle is the wrong only buy for the carpet. The middle band is HomeGard at £11.24 and the Virbac Indorex 500 ml can at £13.63. Both name a growth regulator somewhere on the listing. A same-week check moved HomeGard to about £11.99, so use the live amazon.co.uk price. The upper band is Isabella’s Clearly CATS at £19.99 for 60 ml, the Virbac twin at £24.49 and the Indorex-branded twin at £25.34. The £20 bottle is a hydrosol for a coat, not a premium room can. Buy a twin when you already expect a second can.

Conflicts in this set

On the Virbac 500 ml listing, the title says 500 ml and the item-volume field says 200 ml. Trust the title. The active-ingredient line only says Spray, while the bullets name permethrin, piperonyl butoxide, Chrysanthemum cinerariaefolium and pyriproxyfen. Zero In’s bullets name cyphenothrin and prallethrin. The active line says permethrin. No growth regulator is named, so the low price is not the Indorex or HomeGard specification. The Indorex-branded twin has a brand field of Indorex, not Virbac, and this scrape has no active line. A 4.8 from 166 reviews is not the same shelf evidence as 4.6 from 25,417. Isabella’s Clearly lists a dog-breed size of Small on a title that says cats.

Common questions

Is most of the flea problem in the carpet?
PDSA says about 95 percent of a flea infestation is in the home, which is why a household spray is the usual room job. Adults on the pet still need a product meant for that animal. A carpet can does not replace the pet treatment, and a coat spray does not cover the carpet.
Do I need a separate product on the pet?
Yes, if the animal has fleas or lives where fleas are active. HomeGard says never spray the can on an animal. PDSA says a household spray on a cat is an emergency. Buy a species-correct product the same day, for every pet in the home.
Will one 500 ml can do a three-bedroom house?
Indorex’s listing says one 500 ml can treats about a three-to-four-bedroom house. Reviewers often open a second can when they spray every crevice. Zero In’s line is up to 15 square metres per 300 ml can. Treat every coverage sentence as the seller’s claim.
Is the £8 bottle the same kind of product as the £9 aerosol?
No. LIXINGLY at £8.49 is a 100 ml peppermint and eugenol spray for the coat, and the listing says it is not a veterinary medicine. Zero In at £8.99 is two household aerosols of 300 ml. The prices sit in the same band and the jobs do not.
Are peppermint or lavender sprays a substitute for a household can?
Blue Cross says herbal flea remedies are not an effective long-term method. LIXINGLY and Isabella’s Clearly have 3.8 star lines and short review files. They are not room-coverage cans, and they do not name a growth regulator.

Related pages

Best household flea spray

Flea spray

Flea spray if you have cats: permethrin and re-entry

Household flea spray vs pet spray: not substitutes

How to use household flea spray: rate and re-entry

Sources

Public UK sources used for this comparison. Shelf prices, stars and review counts are the amazon.co.uk figures captured for these seven listings. Last checked 22 October 2026.

  1. PDSA, fleas on cats (retrieved 22 October 2026)
  2. PDSA, permethrin toxicity in cats (retrieved 22 October 2026)
  3. GOV.UK, veterinary medicines on the market (retrieved 22 October 2026)
  4. HSE, regulated biocides (retrieved 22 October 2026)
  5. Blue Cross, dog flea advice (retrieved 22 October 2026)
  6. Blue Cross, cat and kitten flea treatment (retrieved 22 October 2026)
  7. Indorex Defence 500 ml label (retrieved 22 October 2026)
  8. FRONTLINE HomeGard (retrieved 22 October 2026)