PT Ultracide - 20 oz.

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4.5 out of 5 stars Rating: 4.6

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PT Ultracide - 20 oz. can (20 oz)

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PT Ultracide - 20 oz.

PT Ultracide, previously known as Ultracide is a very effective flea control aerosol that provides immediate kill of adult fleas and prevents formation of new adults from eggs or larvae. Ultracide dries quickly and will eliminate flea problems for up to seven months. (Ultracide differs from Precor 2000 in that Ultracide has an initial faster kill.)

How Ultracide Works

Ultracide Spray contains Permethrin and Phenothrin to kill adult fleas fast. It also contains Pyripoxyfen (an insect growth regulator) to prevent reinfestation for up to seven months. Pyripoxyfen penetrates deep into the base of carpet and upholstery fibers, where pre-adult fleas live and targets fleas in the egg and larval stages of development, preventing them from producing new infestations of breeding, biting adults.

While the insect growth regulator in Ultracide will continue to work for up to 7 months, it is recommended to re-apply Ultracide after 14 days if new fleas continue to emerge.  This will increase knock-down of new adults.  Preparations and cleaning such as vacuuming thoroughly before and after treatments will also greatly affect the success of Ultracide.  See below for complete treatment instructions.

Utracide Target Pests

Flea eggs and larvae, adult fleas


Target Uses of Ultracide

For indoor treatment of active flea infestations and to prevent flea infestations from developing. Prevents re-infestation for 7 months. Ultracide is also ideal when treatment is limited to a few areas or the convenience of an aerosol ready-to-use product is desired.

ACTIVE INGREDIENTS: 0.05% Pyrethrins, 0.4% Permethrin, 0.1% Pyripoxyfen

Ultracide Application Instructions

How do I use Ultracide Spray to treat for fleas?

  1. Identify treatment areas: especially those where pets frequent, such as in and around pet's sleeping and resting areas. These are the primary areas where fleas and their eggs are found. (Before treatment, a test application should be made to upholstery, drapery, light-colored, delicate fabrics, or wood surfaces in an inconspicuous place.)
  2. Prepare treatment areas: For best results with Surface/Carpet treatments, vacuum thoroughly before spraying and discard vacuum bag in outside trash. (This product may also be used for infested surfaces inside motor vehicles.)
  3. Apply treatment. For flea infestations, a single can treats 2000 square feet. Hold container upside down 2-3 feet from surface, point actuator towards the surface and push button. Using a sweeping motion, apply a light uniform spray to all surfaces of furniture, rugs, carpets, drapes, and around all pet resting areas. Avoid thoroughly wetting surfaces. Mist treated areas only until "slightly damp". Do not over-treat. Reapply in 14 days, if necessary. IMPORTANT: Only complete and proper application to carpets, upholstery, drapes, and other fabrics will provide thorough flea/tick elimination. Keep children and pets out of areas during treatment. Vacate room after treatment, and ventilate until surfaces are dry before reoccupying.
  4. For best results, eliminate fleas on pets with an approved flea product like Petcor Flea Spray or a product recommended by your veterinarian.

Always read the product label completely before use.

Each 20 oz. can of Ultracide covers up to 2,625 square feet.  An area of 80 – 100 square feet can be treated in approximately 10 seconds. Keep in mind that most infestations will require at least one follow-up treatment after two weeks.

Ultracide is for use in the following areas:

In and around Apartments, Automobiles, Homes, Hospitals, Hotels, Kennels, Motels, Offices, Schools, Supermarkets, Transportation Equipment (Buses, Boats, Ships, Trains, Trucks), Warehouses, Utilities, Veterinary Clinics and Other Commercial and Industrial Buildings


For flea control, follow the step-by-step directions above. When treating upholstered furniture, treat under cushions and in areas where flea development occurs. Cover aquariums and fish bowls and remove birds from area prior to treating.

Ultracide is excellent for porous flooring such as concrete, however it may stain finished flooring, such as hardwoods. Also, fleas will rarely harbor on sealed hardwood flooring.

Fleas may appear for up to two weeks after treatment. This is the pupal window – when younger stages of fleas may still emerge – and the residual activity of Ultracide should kill adults which emerge during this time. Frequent vacuuming (every day or every other day) will also help encourage immature fleas to emerge more quickly while also picking up the organic matter on which larvae feed.


Ultracide is not intended for use outdoors.

Ultracide Features

*Convenient ready-to-use formulation has adulticide and insect growth regulator all in one.

*No additional equipment is needed to measure or apply Ultracide.

*Continues to prevent re-infestation for up to 7 months

*Low odor

Extra Tips for Using Ultracide

*Ultracide is NOT labeled for use on animals. Keep pets out of treatment area until product dries.

*Treat outdoor areas where pets play, rest, or otherwise frequent to prevent re-infestation using appropriate products such as our Indoor/Outdoor Flea Kit.

*Try using a paper towel to mark “hot spots” where pets frequent, and pick up just before you treat the area.

*Wash or dispose of pet bedding before treatment.

*Additional cleaning such as steam cleaning or mopping should be done prior to application of Ultracide.

Compare with: Precor 2000 Plus Premise Spray, Alpine Flea Insecticide with IGR Aerosol

Rating Snapshot

5 stars   148
4 stars   13
3 stars   7
2 stars   4
1 star   8

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Average Customer Rating
4.5 out of 5 stars (180)

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Most Helpful Customer Reviews
  • 96 of 101 people found this review helpful:

    5 of 5 stars  This stuff is great.
    By Joe in syracuse, ny on 08/15/2009

    As a tech, I do this for a living and Ultracide is the only product I will use for fleas. My company wants us to use other products, but I won't until they stop buying it. Remember to read the label. I also tell my customers to vacuum everyday for the next 2 weeks after using Ultracide, it brings the adults out of the pupa stage and gets rid of them faster!

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  • 63 of 68 people found this review helpful:

    5 of 5 stars  What a blessing!
    By Mary on 10/14/2008

    I live in the south where the fleas are quite a bother, and as we have 5 dogs that stay indoors, it has been a job fighting the fleas. We purchased the Ultracide from our local vet and what a blessing it has been. We only used 1/2 a can for our 1400 sq foot house and after just 24 hours our dogs are resting much more comfortably. I have not seen a flea since then and as an added bonus I found that the Ultracide also kills the huge palmetto bugs that plague us here. It is well worth the cost and I have found that I am now saving more money by using the Ultracide as I do not need to purchase the topicals such as Frontline or Advantage. Thank You.

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  • 51 of 51 people found this review helpful:

    5 of 5 stars  Awesome product
    By Lisa in Mississippi on 05/25/2010
    Verified Purchase

    I bought this 3 weeks ago, sprayed the entire house, we had fleas really bad...jumping and biting my 10 month old.  Pprior to using Ultracide, I had spent alot of money on those bomb things and used them over and over...the fleas would come right back. After spraying Ultracide I have not seen a flea since. I will continue to use this and recommend it highly to anyone.

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  • 49 of 50 people found this review helpful:

    5 of 5 stars  Proper Use
    By Nate in Chicopee, MA on 03/17/2010

    I used to use this product as a tech. Works great if you vacuum everyday to "wake up" the eggs and larvae. If you don't vacuum before application and everyday after then don't bother trying any product.

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  • 37 of 37 people found this review helpful:

    5 of 5 stars  Great for flea infestation
    By Kathleen in Largo, FL on 03/23/2011
    Verified Purchase

    Best price I could find with free and fast shipping to boot. I have 4 indoor cats that picked up fleas from a visiting dog. Fleas were so bad that I was picking them off of me everywhere I went. Once the cats were treated, I misted all carpeting, baseboards, and upholstery with Ultracide. No need to apply heavily. I immediately noticed a difference. Vacuumed thoroughly the next day. Reapplied Ultracide about a month later. We've been flea-free ever since and the spray can is still at least half full! Would highly recommend this product and this company. However, it is aerosol so remove pets until the mist settles and wear a protective face mask when applying. It's still much more convenient than foggers.

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Most Recent Customer Reviews
  • 5 of 5 stars  Simply the best.
    By John in Spring Valley on 10/07/2016

    Let me be brutally honest. I have a few pets. And man the fleas would pull up a darn chair and watch tv with me. I tried countless and countless products. My brother gave me ultracide one day. I was why not. And havent seen a flea for 10 months. Great product.

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  • 5 of 5 stars  good stuff
    By Willyums in Maine on 10/04/2016

    works very good. this year I have been overrun with fleas. I have had to get two containers but it is worth it because it works.

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  • 1 of 5 stars  P T ULTRACIDE-20 oz.
    By Charles in Dallas Tx on 09/25/2016

    When I pushed down the button to set it off it had no pressure to make it set off and use. It may have been just this can but for the price I paid it should have worker and I would never buy it again.

    Expert Response   Expert response:
    Please give us a call so we can assist you with troubleshooting or getting a new can out to you if the one you received is defective. 866-581-7378

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  AMAZING!!!!
    By Wendy in RALEIGH NORTH CAROLINA on 09/19/2016


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  • 1 of 1 people found this review helpful:

    3 of 5 stars  Mediocre
    By Lois in Dowagiac MI on 09/03/2016

    Based on other reviews, I expected more from this product. For something advertised to cover over 2600sf, I only wanted to fumigate 180sf. I went through almost 2 cans, and there are STILL fleas in my kennel. I'm going to try Diatomaceous Earth next. Wish me luck. Disappointed.

    Expert Response   Expert response:
    Please note that if you used 2 cans of Ultracide in a 180 sq ft area, you are over using and wasting your product. Flea control can take 4-6 weeks because of the life cycle of the fleas. Treatments should be done every 14 days until the fleas are no longer present. Please take a few minutes to read our flea control guide so you can better understand how to implement a successful flea control program: Please let us know if you have any questions. We are always happy to help!

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  • 3 of 5 stars  PT Ultracide
    By Jesus in San Antonio Tx on 08/29/2016

    The product seemed to work after spraying the second time.

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  • 5 of 5 stars  Works great!
    By Anita in Columbus, Ohio on 08/17/2016

    My dog has infested my house with fleas, and this products works - very fast! I would highly recommend it to anyone!

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  • 5 of 5 stars  PT Ultracide
    By Sharon in Philadelphia, PA on 07/21/2016

    I bought a few other products from the pet store and they didn't work. I went online and read the reviews about PT Ultracide and they were all good. The product was shipped out really quick. It works great! I sprayed the whole house and so far so good. I also had to put flea treatment on my cat and dog so the combination has been working.

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  • 5 of 5 stars  Indoor fleas
    By Myla in ShermanTX on 07/20/2016

    One treatment and no signs of fleas.

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  • 1 of 5 stars  Dissappointed
    By Candace in Carneys Point, NJ on 07/19/2016

    After hearing great reviews and getting no where with the fleas, we tried PT Ultracide. Bought one expensive can close to home and sprayed the whole house. I used the whole can and we have less square footage than what the can reads it will do so I know I didn't skimp. Bought the second can here and sprayed the house a second time. Still no change in the amount of fleas that I saw! We bought a can of Raid and the next day we saw a difference! I would try Raid first before spending the money on PT Ultracide.

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Most Helpful Q&A's

07/28/2010 Tracy

QHow long do you wait to vacuum rugs after application?
I most recently bought Ultracide from my local pest control store and applied it to my carpets. I have one particular hallway that is the most affected area. It seems all the adult fleas have been killed and now we only see the tiny little fleas. Should I continue to vacuum the rugs to get rid of these little fleas? The pest control person told me to wait at least one week to see if the product truly worked, and I should not vacuum or clean the floors because it would remove the product from the carpets and floors. Is this a good idea since the eggs can lay dormant for some time before hatching?

AIt is our recommendation and industry standard that you vacuum immediately before the application of Ultracide and every day or every other day after the application for the next two weeks. Vacuums can physically remove a decent percentage of flea eggs that are in the carpet, along with much of the organic crud that the flea larvae feed on. A critical part of the diet of the larva is dried blood, present there as fecal material from the fleas that are on the pets. Wherever the pets spend time they will shed the fecal matter and the eggs, so it is extremely important that you focus on these potential hot spots where the pets sleep. A vacuum also will remove a small percentage of larvae, but the larva is pretty tenacious, and will wrap around the carpet fibers down there at the base of the pile, and hold on for dear life as the vacuum passes by. The pupa is even tougher to physically remove, for it uses fibers as part of its "cocoon". But, the vacuum will stimulate the flea adults still in their pupa form to quickly emerge as the adult, and at this point perhaps be sucked up in the vacuum. Even if they are not removed by the vacuum, at least they now are exposed and susceptible to your treatment. After two weeks most infestations require that you do a second application of the Ultracide and continue with the vacuuming.

70 of 73 people found this answer helpful.
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08/12/2009 Katie

QIs Ultracide flea spray safe to use around children and pets?
I am concerned about a chemical application for obvious reasons. If you spray Ultracide aerosol on your carpet, sofa, chairs, bed etc. does it have the potential of making myself children and pets sick? It can't be a good thing. Are there any secret to use this as effectively as possible without harming loved ones?

AUltracide is a very safe and effective flea control product that is used widely by professional companies such as Terminix and Orkin in homes with children and pets all the time.  As long as you follow the directions on the product label, there are no issues with anyone in the home being sick.  You should only apply this product to carpeted areas and upholstered areas.  Do not apply on top of couches and chairs where people rest their arms, fleas do not breed in these areas.  You would want to spray around the foot of the furniture, and underneath couch cushions.  You should have children and pets in another room while you are treating.  After treatment allow 30 minutes to dry and then it is perfectly safe for children and pets to re-enter the room.

61 of 61 people found this answer helpful.
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09/12/2009 Brooklyn

QHow long does it take Ultracide to dry before I can go in the room?

ATypically, Ultracide should be dry and it will be safe to re-enter the room 30 minutes after application of the product.

38 of 38 people found this answer helpful.
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10/27/2010 Michelle

QI have used Ultracide for three weeks now, but I am still finding tiny fleas on my cat. What should I do?
We are vacuuming a few times per week, have applied Ultracide to all furniture, carpet, hardwood and drapes (home is mostly hardwood). Disposed of cat bedding. Cat (indoor animal) has been treated with Revolution three weeks ago. There are no visible fleas in the home, but the cat still has 15 or so tiny fleas each day when I use flea comb. What do I do next?

AUltracide should be used once every two weeks until you do not see fleas any longer. Light to moderate infestations will require at least 2 treatments and heavy  infestations may require three treatments. The product sounds like it is doing exactly what it is supposed to do, as you are not finding the large adult fleas, only the very small juvenile fleas that are emerging from their cocoons. At this point, you should treat again (be sure to wait at least two weeks from the time of your last treatment) and keep up the vacuuming.

24 of 26 people found this answer helpful.
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11/04/2009 Steve

QDoes Ultracide flea spray work on concrete basement floors?
I've heard that with sprays, they are soaked into the concrete and not as effective.

AUltracide does work on nearly all surfaces, including concrete floors.  Since concrete floors are very porous, an aerosol works well because the particle size of the product is so small it can evenly coat the porous surface and work its way in tiny cracks and crevices where the fleas like to lay their eggs.  If you were to look at concrete under a microscope, it would look like the moon, full of large cracks and crevices and crater like indentations.  Aerosol particles are so small they can fill these quite easily and therefore work very well on concrete surfaces.

24 of 26 people found this answer helpful.
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Most Recent Customer Questions

10/10/2016 Lynn from Rudolph

QIs PT Ultracide safe during pregnancy?


When used according to the product label, PT Ultracide - 20 oz. is safe for use in a home where a pregnant women resides. It is important that everyone (including the pregnant person) except for the applicator is out of the area during the application. Everyone is free to return to the treated area as soon as it is dry. †It would not be recommended for a pregnant woman to atually apply the product as a safety precaution.

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01/07/2016 Amber from Leonville, La

QCan I use Ultracide around the outside of my house?
I have a small house so one can should be plenty for the inside. If I have some left over after I spray my house could I use it on the outside?


Ultracide is labeled for use indoors only. We do carry outdoor flea control products. Please take a few moments to review our article on How to Get Rid of Fleas for more helpful treatment information.

1 of 1 people found this answer helpful.
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01/06/2016 Parker from Birmingham, Al

QCan I spray Ultracide on my leather furniture?
I have leather furniture and the cushions do not come off. I want to spray it but don 't know where or how since I have read a lot of the Q&A about not spraying on top of couches.


We would not advise spraying Ultracide on any leature furniture as it cause staining to the treated area. You may treat upholstered furniture under cushions for more effective results.

1 of 1 people found this answer helpful.
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09/21/2015 Rachel from Albany, Ny

QIs it safe to treat with Ultracide and then allow a pregnant dog to return?


Yes. Please be sure to keep your pet out of the area until Ultracide has had time to dry completely.

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06/06/2015 Reta from Baton Rouge La

QWhat is the shelf life of Ultracide?

A Ultracide - 20 oz. will last up to 1 year after opening. Please store in a cool dry area.

1 of 1 people found this answer helpful.
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11/07/2014 Adam from St. Paul Mn

Q4 weeks of Ultracide and fleas are still terrible- is this normal?
I have a severe infestation of fleas in my home and have been using Ultracide to treat them for exactly 4 weeks today. I have been applying to ALL floor surfaces, washing linen daily and vacuuming all floor surfaces daily during this time. I noticed the "knock down" the day I first used it and for the first two weeks the population seemed to be steadily dropping off. I have not seen any full grown brown adults in the past 2 weeks which is reassuring but In the past several days the population seems to be rebounding and I'm very worried they are developing a tolerance to it. Last night was so bad I didn't sleep because as soon as I lay down I felt them crawling all over me in bed (while wearing long sleeve clothing and flea repellent no less) Is tolerance to Ultracide a possibilty? If so, what do I do next?

AYou are doing exactly what you should be doing. If you are still seeing fleas, it is possible that the problem was worse than you initally though. You will need to do treatments with the Ultracide until the fleas are completely gone. You will also keep vacuuming daily for the 14 days. The fleas will not build up a tolerance to it.

9 of 9 people found this answer helpful.
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11/03/2014 Mike from Norcross

QHow Do You Kill Flea Eggs?
Can you please explain how to kill flea eggs? Thank you.

AThe key to killing flea eggs is using an IGR or Insect Growth Regulator. Most IGR's cause growth abnormalities in the egg and larvae stages that prevent growth. Ultracide is a very effective flea control aerosol that provides immediate kill of adult fleas and prevents formation of new adults from eggs or larvae. Ultracide is a very safe and effective flea control product that is used widely by professional companies such as Terminix and Orkin in homes with children and pets all the time.  You should only apply Ultracide to carpeted areas and upholstered areas.  Do not apply on top of couches and chairs where people rest their arms, fleas do not breed in these areas. You would want to spray around the foot of the furniture, and underneath couch cushions.  You should have children and pets in another room while you are treating.  After treatment, allow 30 minutes to dry and then it is perfectly safe for children and pets to re-enter the room. Vacuum immediately before the treatment and every other day for the next 14 days. A second treatment may be needed after 14 days for heavy infestations.

5 of 5 people found this answer helpful.
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09/06/2014 Gerald from Oakdale,new York

QWhat is the best product to use for a bird mite infestation in the house and also in the car? I live in new yo

AIt is important to be absolutely sure you are actually dealing with bird mites. Have the suspected bird mite identified by a reputable source, such as your local cooperative extension office or a reputable pest control operator. Treatments will vary for different pests. If you do indeed have bird mites, you must first find the source of the infestation, usually a bird nest or a dead bird on or in the home. Removal of the infested nest or bird and a thorough cleanup is necessary. For treatment in the home, we recommend you frequently vacuum all carpet and upholstery and dispose of the bag or vacuum contents in a sealed bag outdoors. Spray Sterifab on couches, chairs and other upholstered furniture where you may spend time resting. Use MotherEarth Dust in all cracks and crevices around the perimeter of the room. Apply a thin coat of MotherEarth dust to rugs and carpets. Rake (not sweep) nap back and forth, causing dust to enter rug or carpet. Let product sit overnight. Repeat application as necessary and vacuum every 3 - 4 days for effective control. MotherEarth dust does not have a fast knockdown, it can take several days for insects to die after they contact the dust.  Put all clothes through the dryer on high heat to help kill mites and their eggs.We have had many customers use the above recommendations with great success. Most customers report that it can take several months to get rid of all of the mites. Finding and removing the source of the infestation is very important and is the key to getting rid of the mites for good.

1 of 1 people found this answer helpful.
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08/08/2014 Julie from Augusta, Me

QCan I use Ultracide on my couches? They are microfiber material.
And if so can I spray the entire surface, or only under the cushions?

AUltracide can be applied to microfiber couches. We recommend that you only apply to the seams, folds, and under the cusions.

3 of 4 people found this answer helpful.
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07/19/2014 Laura from Lancaster, Sc

QCan I spray Ultracide in my utility room where my gas hot water heater is located?
I have noticed a lot of fleas in my utility room (where vents for hot water heater and dryer are located). I purchased your Ultracide product and sprayed the entire house except for the utility room because I was unsure as to whether it was safe to do so because of the gas hot water heater. Therefore, I put borax down on that floor and have noticed quite a few fleas (dead or struggling to stay alive). I will do a second treatment of Ultracide in another week and would like to know if I can use it in my utility room. I also used the ultracide (also sprinkled borax) on the hardwood floors, without any staining, as more than 1/2 of the flooring in the house is hardwood and I was experiencing fleas jumping onto my socks and pant legs from the hardwood floors and vinyl.

AYou can apply Ultracide to the floor surfaces in the utility room (after testing a small area). You should vacuum daily all of the floor surfaces and dispose of the bag or empty the cansiter immediately when finished. The product should NOT be applied to an area where it can contact a flame as it is extremely flammable.

2 of 2 people found this answer helpful.
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