Top 5 Best Pesticides For Fleas (2022 Review)

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Home > Product Reviews > Flea Products > Top 5 Best Pesticides For Fleas (2022 Review)

Fleas may be small, but they can be harmful – to you, your children, pets, and livestock.

Fleas are also very rugged, i.e.; they’re hard to kill.

This article will arm you with the following information:

  • Our #1 pick for pesticides for fleas
  • The top five best pesticides for fleas
  • How pesticides work on fleas
  • Are pesticides safe for children and pets?

To get rid of fleas requires using the right pesticides the right way in the right place.

Flea control, and pest control, in general, requires a disciplined approach if you expect to kill fleas. Ready to get started?

(Or click here to skip to our recommended pick!)

Our Overall #1 Rated Pick

PT Alpine Flea & Bed Bug Pressurized Insecticide

  • Premixed
  • Contains an IGR
  • Easy to use

PT Alpine Flea & Bed Bug Pressurized Insecticide is our favorite way to get rid of fleas. It works great and because it is a pressurized aerosol, it is easy to use. There is no mixing required. You buy it, take it home, shake it a bit, and spray.

It doesn’t come in a sexy container with bright colors and day-glow pictures on it. The appearance is kind of drab if you want to know the truth. Luckily, the fleas won’t be alive long enough to be offended by its looks.

If you want to know how to get rid of fleas, this is it. It kills fleas with no messing around.

Reviewed By:
Ed Spicer

Ed has been working in the pest control industry for years helping 1,000's of homeowners navigate the world of insect and rodent management. He manages Pest Strategies now helping homeowners around the world!

PT Alpine Flea and Bug Pressurized Insecticide

  • Premixed
  • Contains an IGR
  • Easy to use

BASF 671858 PT Ultracide Pressurized Flea Insecticide

  • Easy to use
  • Premixed
  • Contains an IGR

Cimexa Dust

  • Cimexa Dust does not stain.
  • This product is odorless.
  • It starts killing fleas upon contact.

Vet’s Best Flea and Tick Yard Spray

  • All Natural Ingredients.
  • This product treats a large area at a time.
  • Uses a hose hookup for easy applications

Precor IGR Insect Growth Regulator

  • Breaks the breeding cycle
  • Cost-effective
  • Effective on many insects

Table Of Contents

    Top 5 Best Pesticides For Fleas

    Are you short on time or just want a quick answer?

    Check out our list below for a summary of our results.

    If you’re interested in learning about natural flea spray, the following video can teach you more.

    Keep on reading below to learn more about pesticides for fleas.

    What Are Pesticides For Fleas?

    In the simplest terms, a pesticide is any substance that is designed or intended to kill or destroy pests.

    Technically, raccoons, skunks, foxes, snakes, and other small animals and birds can be classified as pests, but in general, pesticides are thought of as insecticides.

    In this discussion, we will use the two words interchangeably as any substance that kills fleas and is used to control a flea infestation.

    An insecticide that kills fleas which have already hatched will not kill unhatched fleas still in their eggs, nor will it substantially harm the pupae.

    In order to eradicate a flea problem (sometimes fleas even end up in your carpets), you’ll need to use something in addition to a regular pesticide. That something is called an Insect Growth Regular, or IGR.

    To fully understand the need for an IGR, you need to know something about the flea life cycle.

    Adult Fleas

    The most common flea is the cat flea. Adult fleas are about 3mm in length, colored reddish-brown or black, and wingless. They have strong hind legs like a grasshopper for jumping.

    Like a bed bug or mosquito, the female requires fresh blood in order to produce flea eggs. After a blood meal, the female can lay 1-2 eggs per hour.

    Adult fleas can live in any crack or crevice in your home, along the baseboards, in the cushions of your furniture upholstery, and any sleeping area such as your bed or your pet’s bedding or kennel.

    Flea Eggs

    Flea eggs are white ovals about half a millimeter in diameter. If the female lays her eggs on your pet, they will fall off since they are not sticky and will not adhere to your pet’s skin or hair.

    This is why vacuuming is one of the first things you should do when beginning a flea treatment, to collect and get rid of the eggs. During this stage, fleas are essentially immune to pesticides.


    Flea larvae hatch from the eggs after a couple of days. They resemble tiny, semi-transparent worms about 1-5 millimeters long. They will eat any organic residue on the floor but the main part of their diet is fecal matter from adult fleas.

    This is another reason for vacuuming, to eliminate their food source. They will go through several growth stages, called instars, getting larger each time until they are ready for the next step in their life cycle.


    The final stage of the flea life cycle is the pupae stage when they spin a silky cocoon around themselves. The outside of the cocoon is very sticky, attracting all kinds of dirt and debris, which camouflages them.

    It is very difficult for pesticides to penetrate the cocoon. When they emerge from the cocoon they will be adult fleas and the whole cycle starts over again.

    During half of their life cycle, fleas are exempt from any pesticide, flea control products, flea collars, flea shampoos, or essential oils you use. Flea products, no matter what they are, won’t be able to hurt them.

    Read more: How long can fleas live without a host?

    How Do Pesticides For Fleas Work?

    There are two basic kinds of pesticides; insecticides containing active ingredients that kill the fleas and insecticides containing IGR chemicals such as methoprene or pyriproxyfen.

    An IGR will interfere with the growth cycle of the fleas, either preventing them from molting properly from one instar to the next or accelerating their growth too fast for them to sexually mature. Either way, the end result is the same – birth control for bugs.

    Read Also: What are the best respirators for pesticides?

    The other pesticides have active ingredients such as permethrin, which is one of the pyrethrins. Fipronil and imidacloprid are other active ingredients that kill fleas.

    Any pesticide that lists one of these chemicals on the label as the active ingredient will be a flea killer. They all work by slightly different methods, some by attacking the central nervous system and others by focusing on the muscles.

    The best flea insecticides though are the pyrethroids.

    Pyrethroids include:

    How Do You Find The Best Pesticides For Fleas?

    When purchasing insecticides, scrutinize the label. The EPA requires the active ingredients, along with other information, to be listed on the label.

    The common name, as well as the chemical name, will be listed showing what percentage of the total product the active ingredient accounts for.

    The following tables will show you which active ingredients are contained in which pesticides.

    Bifenthrin, Permethrin, D-phenothrin

    Cypermethrin, Cyfluthrin, Deltamethrin, Fenvalerate, Lamda-Cyhalothrin

    Talstar Demon WP
    Bifen IT Cyper WP
    Permethrin SFR Cyper TC
    Tengard SFR Suspend SC
    Dragnet SFR Conquer
    Steri-Fab … and many more

    The following active ingredients are included in their respective products:

    Fipronil – Termidor, Taurus, Fuse

    Imidacloprid – Dominion 2L, Premise

    Pyriproxyfen (IGR) – Nylar, NyGuard

    Methoprene (IGR) – Precor

    Dinotefuran (IGR) – PT Alpine

    Some products, such as PT Alpine will have more than one active ingredient listed on the label. If the secondary active is an IGR, it is a combination pesticide that both kills the adult fleas and prevents those that hatch later from reproducing.

    It’s a one-two punch. If the label lists only one active ingredient, you’ll need to mix it with an IGR before spraying in order to achieve the same effect.

    Compare Pest Control Companies Near You

    Are Pesticides For Fleas Effective?

    Yes, but there is a condition. They are effective, if and only if, you use them according to the directions on the label. The label on EPA regulated pesticides is not a marketing tool. It is required by law and it is the law.

    The EPA mandates pesticide manufacturers go through multi-million dollar testing cycles to determine exactly how much pesticide is required to kill each and every insect it works on, then list the mixing directions on the label.

    If you violate those mixing directions, known in the pest control industry as “going off label” you’ve broken federal law. If you get caught doing that, the fines are substantial.

    Normally we don’t like regulations any more than you do, but in this case, we’ll make an exception. If you use too much pesticide, it could have adverse effects on other creatures you’re not trying to eliminate. If you use too little, it will sicken the fleas but not kill them, thus “vaccinating them” against future spraying with that pesticide.

    Read the label before using any pesticide then follow the instructions word for word.

    How To Use A Pesticide For Fleas

    This is the easiest part. Once you’ve finished vacuuming all the floors and upholstery and mixed the pesticides, with an IGR, in your 1-gallon pump-up sprayer, spray every inch of the baseboards, floors, and furniture in the entire house.

    Don’t get it soaking wet, but it should be damp to the touch when you’re finished. An average house of 1,800 square feet should take 1-2 gallons of mixed chemical to properly spray.

    Fleas don’t normally live indoors. They are an outdoor bug that found their way inside.

    Read more: Can fleas fly? How do they get around?

    That means you need to kill the outdoor fleas too. Spray a ten-foot wide band all the way around the house. That will take another 1-2 gallons, maybe more.

    Two weeks later, repeat the process. Two weeks after that, repeat it a third time. The fleas should be gone.

    Are Pesticides For Fleas Safe Around My Pets and Children?

    Yes and no.

    If the pesticides are used as directed on the label, then yes, they’re safe around everything except fish and birds. Cover all the fish tanks and bird cages while you’re spraying. Leave them covered until all the pesticide has dried.

    If you go off label and over-mix the pesticide, then no, they’re not safe. Cats are more susceptible to pesticides than dogs. Infants are more susceptible than school-age children.

    Best Pesticides For Fleas Reviewed

    Related Articles

    PT Alpine Flea & Bed Bug Pressurized Insecticide

    This contains an active ingredient, dinotefuran, as well as an IGR and a synergist. A synergist is a chemical that doesn’t have any pesticide qualities in an of itself but acts to enhance the potency of any pyrethroid ingredients. It comes premixed in an aerosol form which makes it extremely easy to use. It has the added benefit of being impossible to go off label.

    The Good And The Bad

    • Premixed
    • Contains an IGR
    • Easy to use
    • Strong smell
    Overall Rating

    BASF 671858 PT Ultracide Pressurized Flea Insecticide

    This is another aerosol pesticide for flea and tick control. It contains two active ingredients, an IGR, and a synergist. It is premixed, easy to use, and avoids any possibility of off-label issues. It is labeled for a wide variety of homes, hospitals, restaurants, factories, trucks, trains, vets, warehouses, and others.

    The Good And The Bad

    • Easy to use
    • Premixed
    • Contains an IGR
    • Nozzle has a tendency to clog

    Cimexa Dust

    One of the most important steps of dealing with a flea infestation inside of the home is vacuuming everything that has a fabric surface.

    That means beds, carpets, rugs, couches, chairs, and anything else that the little blighters can wiggle in between the fibers and lay their eggs in these areas. Carpet is the main culprit.

    Cimexa Dust is one of the more effective pesticides for taking care of fleas, but it is just so messy that using it everywhere isn’t practical. We have found that the best strategy for using Cimexa Dust is to sprinkle a little bit onto the carpet and then vacuum it up.

    What does this accomplish? It kills all the fleas inside of the vacuum cleaner. So you do your vacuuming, let it sit overnight, maybe even three days, and then when you’re ready to empty the machine out, you take it outside, empty the container into a proper receptacle, and all the fleas should be dead.

    Another great thing about Cimexa Dust is you can use it in places where it won’t be disturbed, such as cracks and crevices. When left undisturbed, Cimexa Dust will remain active for up to 10 years, making it one of the longer-lasting products on the market.

    Cimexa Dust is a desiccant, which means it literally dehydrates the fleas to death. It is also odorless, so you won’t have to vent the house after using it, and it is non-staining, so you don’t have to worry about ruining the carpet you use it on.

    The Good And The Bad

    • Cimexa Dust does not stain.
    • It starts killing fleas upon contact.
    • This product is odorless.
    • Cimexa Dust stays active for a long time.
    • Messy and hard to control.

    Vet's Best Flea and Tick Yard Spray

    Making sure that your home stays flea-free means that you also need to keep your yard flea-free. How most homes get fleas is they are brought inside as hitchhikers on either people or pets.

    To prevent this, you need to do two things. The first is to keep your grass mowed short because fleas are basically little vampires and won’t live in the sun.

    The second thing you need to do is treat the lawn with a product that will kill the adult fleas and last long enough to kill the fleas as they hatch out of their eggs.

    Vet’s Best Flea and Tick Yard Spray is for outdoor use only or on kennels. It uses natural oils to kill fleas and comes in a large 32-ounce container that will allow you to treat 4,500 square feet.

    I highly recommend focusing on the shaded areas of the lawn, under bushes, trees, or into tall decorative grass as these are the types of places fleas will try to live.

    The next great thing about Vet’s Best Flea and Tick Yard Spray is that it has a hose attachment, so you don’t need to buy any extra equipment to use it.

    Simply hook up the hose, turn it on, and start spraying the yard. This product does contain a high concentration of natural oils, which can irritate the skin. It is highly recommended that you use protective gear while using it and to not walk barefoot on the lawn or treated areas until it is dry.

    The Good And The Bad

    • All Natural Ingredients.
    • This product treats a large area at a time.
    • Uses a hose hookup for easy applications
    • The natural oils inside this product can irritate the skin. Use protective equipment when applying.

    Precor IGR Insect Growth Regulator

    Precor is an IGR concentrate. Following the directions, add a small amount to one gallon of water. Add an active ingredient pesticide and mix thoroughly. Because you use such a small amount each time, it is cost-effective over the long run and it works on more than just fleas (see the label for a full list of insects).

    The Good And The Bad

    • Breaks the breeding cycle
    • Cost-effective
    • Effective on many insects
    • Has to be mixed
    • Has a peculiar odor
    Compare Pest Control Companies Near You