20 Best Flea Shampoo For Dogs [2024]

Are you looking for the best flea shampoo for dogs? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling flea shampoo for dogs.

We Recommended:

# Preview Product
1 Vet’s Best Flea and Tick Advanced Strength Dog Shampoo | Flea Treatment for Dogs | Plant-Based... Vet’s Best Flea and Tick Advanced Strength Dog Shampoo | Flea Treatment for Dogs | Plant-Based...
2 Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age... Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age...
3 Veterinary Formula Flea and Tick Shampoo for Dogs and Cats, 16 oz – Dog and Cat Flea Shampoo with... Veterinary Formula Flea and Tick Shampoo for Dogs and Cats, 16 oz – Dog and Cat Flea Shampoo...
4 TropiClean Natural Flea & Tick Maximum Strength Shampoo for Dogs, 20oz - Kills Fleas, Ticks, Larva,... TropiClean Natural Flea & Tick Maximum Strength Shampoo for Dogs, 20oz - Kills Fleas, Ticks,...
5 Veterinary Formula Clinical Care Antiparasitic & Antiseborrheic Medicated Dog Shampoo, 16 oz –... Veterinary Formula Clinical Care Antiparasitic & Antiseborrheic Medicated Dog Shampoo, 16 oz –...
6 PetArmor Plus Flea & Tick Protection Oatmeal Shampoo for Dogs, 18oz PetArmor Plus Flea & Tick Protection Oatmeal Shampoo for Dogs, 18oz
7 Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age |... Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age...
8 Hartz UltraGuard Pro Triple Action Flea & Tick Shampoo for Dogs, Conditioning Formula, 18oz Bottle Hartz UltraGuard Pro Triple Action Flea & Tick Shampoo for Dogs, Conditioning Formula, 18oz Bottle
9 SENTRY Oatmeal Flea and Tick Shampoo for Dogs, Rid Your Dog of Fleas, Ticks, and Other Pests, Hawaii... SENTRY Oatmeal Flea and Tick Shampoo for Dogs, Rid Your Dog of Fleas, Ticks, and Other Pests,...
10 Advantage Flea and Tick Treatment Shampoo for Dogs and Puppies, 24 oz Advantage Flea and Tick Treatment Shampoo for Dogs and Puppies, 24 oz
11 SENTRY Flea and Tick Shampoo for Dogs, Rid Your Dog of Fleas, and Ticks Tropical Breeze, 18 Fl Oz... SENTRY Flea and Tick Shampoo for Dogs, Rid Your Dog of Fleas, and Ticks Tropical Breeze, 18 Fl Oz...
12 Richard’s Organics Flea and Tick Shampoo for Dogs – 100% All-Natural Actives Kills Fleas, Ticks... Richard’s Organics Flea and Tick Shampoo for Dogs – 100% All-Natural Actives Kills Fleas,...
13 Sergeant's Guardian Flea & Tick Dog Shampoo in Clean Cotton, 18 oz. (00102) Sergeant's Guardian Flea & Tick Dog Shampoo in Clean Cotton, 18 oz. (00102)
14 Vet's Best Flea and Tick Waterless Bath Foam for Dogs | Flea Treatment Dry Shampoo for Dogs | Flea... Vet's Best Flea and Tick Waterless Bath Foam for Dogs | Flea Treatment Dry Shampoo for Dogs |...
15 TropiClean Neem & Citrus Flea & Tick Relief Shampoo for Dogs, 20oz - Soothing Relief from Flea &... TropiClean Neem & Citrus Flea & Tick Relief Shampoo for Dogs, 20oz - Soothing Relief from Flea &...
16 Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age |... Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age...
17 Natural Chemistry De Flea Concentrate Flea and Tick Shampoo, 1-Gallon Natural Chemistry De Flea Concentrate Flea and Tick Shampoo, 1-Gallon
18 Espree Flea & Tick Shampoo for Pets, 1 Gallon Espree Flea & Tick Shampoo for Pets, 1 Gallon
19 Burt's Bees for Dogs Natural Tearless 2 In 1 Dog Shampoo & Conditioner with Buttermilk and Linseed... Burt's Bees for Dogs Natural Tearless 2 In 1 Dog Shampoo & Conditioner with Buttermilk and...
20 kin+kind Flea and Tick Shampoo for Dogs & Cats (12 fl oz) - Lavender Scent - Vet Formulated with... kin+kind Flea and Tick Shampoo for Dogs & Cats (12 fl oz) - Lavender Scent - Vet Formulated with...
Bestseller No. 1
Vet’s Best Flea and Tick Advanced Strength Dog Shampoo | Flea Treatment for Dogs | Plant-Based...
  • ADVANCED STRENGTH - 2X flea killing effectiveness. Kills fleas, flea larva, flea eggs, and ticks on contact and cleans and deodorizes your dog’s...
  • SAFE & EFFECTIVE -Each active essential oil is 100% certified natural for an effective solution you can trust.
  • VETERINARIAN FORMULATED - Formulated specifically for dogs with natural oils like Rosemary and Peppermint to kill fleas on contact.
  • SAFE TO USE FOR DOGS: Formulated for dogs and puppies 12 weeks or older when used as directed.
  • MADE IN THE USA: Our products are proudly manufactured in the USA with quality domestic and internationally sourced ingredients.
SaleBestseller No. 2
Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age...
  • KILLS ADULT FLEAS & FLEA EGGS - Provides flea treatment, killing adult fleas and flea eggs on your dog or cat to prevent reinfestation.
  • KILLS TICKS - Adams Plus Flea & Tick Shampoo With Precor kills ticks on contact.
  • KILLS LICE - Lice travel on pets, too, and Adams Plus Flea & Tick Shampoo With Precor kills lice on contact.
  • SENSITIVE SKIN FORMULA - Formulated with soothing aloe vera, lanolin, coconut extract, and oatmeal makes it paw-fect for pets with sensitive skin.
  • CONDITIONS AND RESTORES SHINE - Leaves your pet’s coat soft, shiny, and manageable. And very snuggly.
SaleBestseller No. 3
Veterinary Formula Flea and Tick Shampoo for Dogs and Cats, 16 oz – Dog and Cat Flea Shampoo with...
  • MAXIMUM FLEA & TICK CONTROL – With up to 3x more active ingredients, this flea and tick shampoo is formulated with pyrethrum – a natural...
  • WORKS FAST – Give your pet relief from symptoms including droppings/flea dirt in dog’s coat, allergic dermatitis, excessive scratching, licking or...
  • SOAP AND PARABEN FREE – This flea and tick shampoo for dogs and cats is paraben and soap-free. It contains no harsh soaps or damaging detergents,...
  • FORMULATED FOR PETS – This pet shampoo is safe for dogs, cats, ferrets and horses 12 weeks & older. This pH balanced treatment is ideal for your...
  • EFFECTIVE & AFFORDABLE – Veterinary Formula Clinical Care premium medicated products are created with veterinary-grade ingredients, available at an...
Bestseller No. 4
TropiClean Natural Flea & Tick Maximum Strength Shampoo for Dogs, 20oz - Kills Fleas, Ticks, Larva,...
  • Long-Lasting Pest Protection — Maximum Strength Shampoo helps kill fleas, ticks, larva, and eggs by contact and repels fleas for up to 7 days.
  • Light Fresh Scent — Clove, lemongrass, cedarwood, and cinnamon oils act as powerful pest repellents and leave a pleasant citrus aroma.
  • Enhanced Shipping Seal — Packaging is now spill-resistant with a reinforced cap to resist damage and an induction seal to reduce spills. NOTE:...
  • Crafted with Care — Natural* Flea & Tick Max Strength Shampoo is tough on pests, not pets. Formula is gentle, effective, and cruelty free.
  • Soap Free — Gentle coconut cleanser gives TropiClean shampoos a soap-free clean, so you don't have to worry about washing away topical treatments.
SaleBestseller No. 5
Veterinary Formula Clinical Care Antiparasitic & Antiseborrheic Medicated Dog Shampoo, 16 oz –...
  • GENTLE HEALING – Veterinary Formula Clinical Care Antiparasitic and Antiseborrheic Medicated Shampoo for Dogs contains coal tar, salicylic acid &...
  • FAST ACTING – This medicated dog shampoo works fast to relieve symptoms including inflamed scalp, greasy or waxy skin, red skin rashes, bald spots,...
  • VETERINARY RECOMMENDED – This paraben, dye & soap free pet shampoo will not remove topical spot-on flea & tick treatments and helps safely treat...
  • FORMULATED FOR DOGS – Medicated antiparasitic and antiseborrheic shampoo is specifically formulated for dogs over 12 weeks of age. This pH balanced...
  • EFFECTIVE & AFFORDABLE – Veterinary Formula Clinical Care premium medicated products are created with veterinary-grade ingredients but available at...
Bestseller No. 6
PetArmor Plus Flea & Tick Protection Oatmeal Shampoo for Dogs, 18oz
  • IDEAL FOR DOGS: This rich, conditioning formula with oatmeal kills pests that can harm your pet. The flea shampoo is ideal for dogs with sensitive...
  • RID YOUR DOG OF FLEAS: Flea and Tick Oatmeal Shampoo for dogs and puppies has a great Hawaiian ginger fragrance. This flea and tick formula kills...
  • CLEANS AND CONTROLS: Oatmeal Flea and Tick Shampoo cleans, deodorizes and conditions your dog's coat, and pH balanced. It can also be used on dogs and...
  • FULL PACKAGE: 18 fl. oz. bottle contains powerful flea and tick shampoo.
  • PETS ARE FAMILY: PetArmor flea and tick home products help you confidently protect your furry family member from fleas and ticks at home without a...
SaleBestseller No. 7
Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age |...
  • KILLS ADULT FLEAS & FLEA EGGS - Provides flea treatment, killing adult fleas and flea eggs on your dog or cat to prevent reinfestation
  • KILLS TICKS - Adams Plus Flea & Tick Shampoo With Precor kills ticks on contact
  • KILLS LICE - Lice travel on pets, too, and Adams Plus Flea & Tick Shampoo With Precor kills lice on contact
  • SENSITIVE SKIN FORMULA - Formulated with soothing aloe vera, lanolin, coconut extract, and oatmeal making it paw-fect for pets with sensitive skin
  • CONDITIONS AND RESTORES SHINE - Leaves your pet’s coat soft, shiny, and manageable and very snuggly
Bestseller No. 8
Hartz UltraGuard Pro Triple Action Flea & Tick Shampoo for Dogs, Conditioning Formula, 18oz Bottle
  • Triple active shampoo kills fleas, flea eggs and brown dog ticks plus prevents re-infestation for up to 4 weeks
  • Includes one, 18 fluid ounce bottle
  • Conditions and restores shine
  • Can be used weekly for preventative treatment, while cleaning and deodorizing
  • Leaves pet smelling clean and fresh for 5 days
Bestseller No. 9
SENTRY Oatmeal Flea and Tick Shampoo for Dogs, Rid Your Dog of Fleas, Ticks, and Other Pests, Hawaii...
  • IDEAL FOR DOGS: This rich, conditioning formula with oatmeal kills pests that can harm your pet. Ideal for dogs with sensitive skin. Not recommended...
  • CLEANS AND CONTROLS: SENTRY oatmeal shampoo cleans, deodorizes and conditions your dog's coat, and pH balanced. It can also be used on dogs and...
  • RID YOUR DOG OF FLEAS: SENTRY Flea and Tick Oatmeal Shampoo for dogs and puppies has a great Hawaiian ginger fragrance. This tried-and-true formula...
  • FLEAS: Fleas are insects that can start your pet scratching with one bite. They have exceptional jumping skills, leaping vertically up to seven inches...
  • TICKS: Ticks are parasites that belong to the arachnid family (like spiders and mites) and live in wooded or grassy areas where they attach themselves...
Bestseller No. 10
Advantage Flea and Tick Treatment Shampoo for Dogs and Puppies, 24 oz
  • For use on dogs and puppies over 12 weeks
  • As part of a complete flea control program, treat your pets, your home and your yard with appropriate products
SaleBestseller No. 11
SENTRY Flea and Tick Shampoo for Dogs, Rid Your Dog of Fleas, and Ticks Tropical Breeze, 18 Fl Oz...
  • USE: SENTRY Flea & Tick Shampoo for Dogs and Puppies kills fleas and ticks for up to 10 days. It kills flea eggs for 30 days to help prevent...
  • IDEAL FOR DOGS: This rich, conditioning, non-staining formula contains flea and tick killing active ingredients including an insect growth regulator...
  • HOW IT WORKS:  This flea and tick shampoo cleans, deodorizes and conditions your dog's coat while protecting them from nasty pests. Best of all,...
  • FLEAS: Fleas are insects that can start your pet scratching with one bite. They have exceptional jumping skills, leaping vertically up to seven inches...
  • TICKS: Ticks are parasites that belong to the arachnid family (like spiders and mites) and live in wooded or grassy areas where they attach themselves...
SaleBestseller No. 12
Richard’s Organics Flea and Tick Shampoo for Dogs – 100% All-Natural Actives Kills Fleas, Ticks...
  • NO HARSH CHEMICALS – Unlike traditional flea shampoos, Richard’s Organics gentle and safe Flea and Tick Shampoo uses 100% all-natural actives to...
  • FAST ACTING – You will see fleas coming off your dog as you bathe with Richard’s Organics Flea and Tick Shampoo. Ticks let go and are more easily...
  • SOOTHES SKIN: This dog flea shampoo naturally kills fleas and ticks while soothing skin. It does not contain parabens, dye, soap, harsh chemicals, or...
  • FORMULATED FOR DOGS – Natural Flea and Tick dog shampoo is specifically formulated for dogs 12 weeks and older. The pH balanced treatment is ideal...
  • EFFECTIVE AND AFFORDABLE – SynergyLab’s Richard’s Organics pet wellness and healing products are created with premium ingredients and available...
Bestseller No. 13
Sergeant's Guardian Flea & Tick Dog Shampoo in Clean Cotton, 18 oz. (00102)
  • RID YOUR DOG OF FLEAS: Sergeant's Guardian Flea and Tick Shampoo for dogs and puppies has a great clean cotton fragrance. This tried-and-true formula...
  • CLEANS AND CONTROLS: Sergeant's Guardian Flea and Tick Clean Cotton Shampoo cleans, deodorizes, and conditions your dog's coat, and pH balanced. The...
  • PREVENT RE-INFESTATION: The dog flea shampoo kills flea eggs for 30 days.
  • PREVENT RE-INFESTATIONS: This powerful Sergeant's Guardian flea shampoo prevents flea and tick infestations.
Bestseller No. 14
Vet's Best Flea and Tick Waterless Bath Foam for Dogs | Flea Treatment Dry Shampoo for Dogs | Flea...
  • EFFECTIVE AND EASY TO USE - Vet's Best Flea and Tick Waterless Bath Foam kills fleas, flea eggs, and ticks by contact. Our formula also repels...
  • BATHTIME FOR DOGS WHO HATE BATHS - Quick and easy solution to groom your dog when they can’t (or won’t) do it themselves. No need to rinse the...
  • CERTIFIED NATURAL OILS - Carefully formulated for dogs with certified natural essential oils and plant-based ingredients, such as peppermint oil and...
  • NO ADDED PERFUMES - Cleanses and deodorizes your dog's coat, leaving a calming, pleasant smell with no added fragrance.
  • MADE IN THE USA: Our products are proudly manufactured in the USA with quality domestic and internationally sourced ingredients.
Bestseller No. 15
TropiClean Neem & Citrus Flea & Tick Relief Shampoo for Dogs, 20oz - Soothing Relief from Flea &...
  • Soothes Flea & Tick Bites – Dog flea shampoo provides soothing relief from flea and tick irritations.
  • Degreases Dirty Dogs – Removes deep rooted dirt, debris, and grease from the coat without stripping your dog's skin of its natural oils.
  • Eliminates Dog Smell – The revitalizing scent of orange and pine extract will leave your pet smelling fresh and clean.
  • Softens the Coat – Made with sesame oil to soften the smooth the coat.
  • Tough on Dirt, Not Pets — Gentle coconut cleanser gives a soap-free clean, so you don't have to worry about washing away topical treatments.
SaleBestseller No. 16
Adams Plus Flea & Tick Shampoo with Precor for Cats, Kittens, Dogs & Puppies Over 12 Weeks Of Age |...
  • KILLS ADULT FLEAS & FLEA EGGS - Provides flea treatment, killing adult fleas and flea eggs on your dog or cat to prevent reinfestation.
  • KILLS TICKS - Adams Plus Flea & Tick Shampoo With Precor kills ticks on contact.
  • KILLS LICE - Lice travel on pets, too, and Adams Plus Flea & Tick Shampoo With Precor kills lice on contact.
  • SENSITIVE SKIN FORMULA - Formulated with soothing aloe vera, lanolin, coconut extract, and oatmeal making it paw-fect for pets with sensitive skin.
  • CONDITIONS AND RESTORES SHINE - Leaves your pet’s coat soft, shiny, and manageable. And very snuggly.
Bestseller No. 17
Natural Chemistry De Flea Concentrate Flea and Tick Shampoo, 1-Gallon
  • De Flea Pet Shampoo kills fleas on contact without the use of pyrethrin based pesticides
  • Will not wash out spot-on flea and tick control products
  • Also effective on ticks and lice
  • Kills fleas on contact
  • Mixing required, 3 parts water and 1pat DeFlea Shampoo Concentrate
Bestseller No. 18
Espree Flea & Tick Shampoo for Pets, 1 Gallon
  • Kills Fleas and Ticks on Dogs, Cats, Puppies, and Kittens (over 12 weeks)
  • Cleans and Conditions Pet's Coat
  • Leaves Pet Smelling Fresh and Clean
  • Effectively Kills Fleas & Ticks
  • Made in the USA
Bestseller No. 19
Burt's Bees for Dogs Natural Tearless 2 In 1 Dog Shampoo & Conditioner with Buttermilk and Linseed...
  • PET GROOMING BRAND IN THE USA—Join the millions of pet parents who can’t get enough of Burt’s Bees for Pets by using pet grooming brand
  • SOOTHES AND SOFTENS — Burt's Bees Puppy Shampoo and Conditioner cleans, soothes, softens, and conditions your puppy's skin and coat
  • MADE WITH THE HIGHEST QUALITY INGREDIENTS — All natural ingredients include buttermilk, which soothes skin and softens hair and linseed oil, which...
  • SUITABLE FOR ALL DOGS AND PUPPIES — This mild shampoo and conditioner is pH balanced especially for all dogs and puppies
  • 100% SAFE — Veterinarian recommended formula, free of fragrances, sulfates, colorants, and harsh chemicals
Bestseller No. 20
kin+kind Flea and Tick Shampoo for Dogs & Cats (12 fl oz) - Lavender Scent - Vet Formulated with...
  • FAST ACTING PLANT POWERED FORMULA: The combination of essential oils instantly and effectively kills fleas and ticks. Best cat and dog shampoo for...
  • PLANT-BASE CARE: Featuring plant-based ingredients like Coconut, Olive, Castor oil and Peppermint oil, our Flea & Tick Shampoo takes care of all your...
  • FRESH MINTY FRAGRANCE: Enriched with a blend of essential oils, our Flea & Tick Shampoo ensures your puppy smells as great as they feel. A refreshing...
  • PET-SAFE INGREDIENTS: While similar products contain additives that further irritate the skin, our Flea & Tick Plant-Based Dog Shampoo is vet-tested...
  • MADE IN USA: Every kin+kind bottle is lovingly mixed, labeled, and shipped by the hands of our employees paid a responsible, living wage in our...

Having trouble finding a great flea shampoo for dogs?

This problem is well understood by us because we have gone through the entire flea shampoo for dogs research process ourselves, which is why we have put together a comprehensive list of the best flea shampoo for dogss available in the market today.

After hours of searching and using all the models on the market, we have found the best flea shampoo for dogs for 2023. See our ranking below!

How Do You Buy The Best Flea Shampoo For Dogs?

Do you get stressed out thinking about shopping for a great flea shampoo for dogs? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching flea shampoo for dogs, which is why we have assembled a comprehensive list of the greatest flea shampoo for dogs available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for flea shampoo for dogs that you consider buying. Your questions might include the following:

  • Is it worth buying an flea shampoo for dogs?
  • What benefits are there with buying an flea shampoo for dogs?
  • What factors deserve consideration when shopping for an effective flea shampoo for dogs?
  • Why is it crucial to invest in any flea shampoo for dogs, much less the best one?
  • Which flea shampoo for dogs are good in the current market?
  • Where can you find information like this about flea shampoo for dogs?

We’re convinced that you likely have far more questions than just these regarding flea shampoo for dogs, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for flea shampoo for dogs, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible flea shampoo for dogs. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an flea shampoo for dogs buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available flea shampoo for dogs currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of flea shampoo for dogs has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an flea shampoo for dogs?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your flea shampoo for dogs.
  5. Customer Ratings: Number ratings grade flea shampoo for dogs objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their flea shampoo for dogs.
  7. Product Quality: You don’t always get what you pay for with an flea shampoo for dogs, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an flea shampoo for dogs is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining flea shampoo for dogs information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding flea shampoo for dogs is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

FAQ:

Q: What is the best hypoallergenic shampoo for dogs?

A: ELIMINATES ODORS – Naturals dog shampoo is hypo-allergenic and eliminates odors with a long lasting scent. MADE WITH PLANT DERIVED INGREDIENTS – Naturals Dog Shampoo is gentle and mild on your dogs coat. … HOW TO USE – Apply shampoo to wet coat. … 16 OUNCES PER BOTTLE – Each hypo-allergenic dog shampoo contains 16 ounces of our specialty formulation. …

Q: How often should I bathe my dog with flea shampoo?

A: Mix all ingredients in a bottle. Brush the pet prior to bathing. Wet the coat thoroughly. Apply the instructed amount of shampoo and lather up. Rinse and repeat as needed. Use the shampoo every 2 weeks.

Q: How do you make homemade dog shampoo?

A: Combine shampoo ingredients in an empty,clean spray bottle or old shampoo bottle. Shake well! Run warm water over your dog’s coat. Spray or squirt small amounts of the mixture,avoiding the eyes,working your way from the neck down to the hind legs. Lather as you go,massaging the mix into your dog’s coat and skin.

Q: What is the strongest flea shampoo?

A: – Best Shampoo: Adams Plus Flea & Tick Shampoo. – Best Natural: Vet’s Best Flea & Tick Pet & Home Spray. What kills fleas on cats instantly? Dish Soap. Believe it or not, even the most gentle formulations of dish soap have proven to be very effective at exterminating fleas. The dish soap breaks down the flea’s exoskeleton and kills them within minutes, even after it’s been diluted in water.

Related Post: