Ultracide Review

ultracide review


Ultracide is an aerosol insecticide, used to control fleas and other indoor pests. Ultracide contains pyrethrins to quickly kill adult fleas. And pyriproxyfen, an insect growth regulator, prevents eggs and larvae from reaching adulthood. Pyriproxyfen stays active and prevents infestations for 7 months.

PT Ultracide Flea Spray

Ultracide is a premise spray containing an IGR to control fleas indoors for 7 months.

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Ultracide is comparable in quality to other premise sprays. Its competitors all contain similar active ingredients, and in similar concentrations. Likewise, all are highly rated on Amazon.com. The main difference between premise sprays appears to be their price, and Precor 2000 Plus wins as the cheapest.


Product Information

Name PT Ultracide Pressurized Flea Insecticide
Manufacturer BASF
Price $27
Size 20 ounces
Capacity 2625 sq ft
Application Aerosol spray
Use On Home premises
Kills Adults, eggs & larvae
Duration 7 months
Active Ingredients 0.100% pyriproxyfen
0.050% pyrethrins
0.400% MGK 264
0.400% permethrin
0.035% related compounds
99.015% other ingredients
UPC 631589040509
MPN HO-546020913
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Customer Reviews read
Competitors Premise sprays
  • Prices are based on Amazon.com at time of publishing.

Active Ingredients


Ultracide contains 0.1% pyriproxyfen (Nylar). This active ingredient is an insect growth regulator (IGR). It mimics insect hormones that regulate development. When present, the IGR inhibits biological triggers that would transform the insect to the next stage of life. Exposed flea eggs and larvae can’t pupate into adults. Exposed adult females can’t lay viable eggs. IGRs are considered safer traditional insecticides, because they specifically target the insect endocrine system.

The IGR is the most important ingredient in Ultracide for controlling fleas. 95-99% of infestations are composed of eggs, larvae and pupae. These stages live in the environment. Most often they’re found living deep within carpet fibers. Traditional insecticides don’t work well for killing these stages, because the sprays can’t penetrate deep enough to where the fleas develop, and they have a short residual effect. IGRs, such as pyriproxyfen, are better suited for controlling fleas because they remain effective for a long time. They can prevent infestations for up to 7 months.

Permethrin & Pyrethrins

Pyrethrins are used in Ultracide as the adulticide, for killing the adult fleas. Pyrethrins are a botanically derived insecticide, with chemical structures based off of compounds in Chrysanthemum flowers. These insecticides target the nervous system of insects, paralyzing and killing them. Permethrin is a synthetic derivative, known as a pyrethroid. It’s similar in structure but more photostable.

Adult fleas only make up 1-5% of the total flea populations. And once they jump onto a host, they stay there. The only adult fleas in the environment are those that are newly emerging. There won’t be very many at any given time. However, those that are present at the time of spraying will die.

A large portion of the immature fleas developing at the base of carpets won’t be affected by the pyrethrins. Eventually they will emerge as adults, which can aggravate those who’ve sprayed. The good news is this will be the last generation. Future eggs that fall onto the carpets will be sterilized by the IGR.

N-octyl bicycloheptene dicarboximide

N-octyl bicycloheptene dicarboximide (MGK 264) is a synergist. It doesn’t have any insecticidal properties itself, but it enhances the efficacy of pyrethrins. Thus, synergists and pyrethrins are often found together, because it lowers the amount of insecticide needed. This has cost benefits and health benefits.

Comparison to Competitors

Ultracide’s primary competitors are Precor 2000 Plus, Siphotrol Plus II, and Virbac Knockout. All of these are aerosol premise sprays containing similar ingredients and in similar concentrations. Just as you’d imagine, they are all about equal in performance and quality, as evidenced from Amazon.com reviews. The most significant difference between them is price, and Precor 2000 Plus wins as the least expensive.

Precor 2000 Plus

Precor 2000 Plus is comparable to Ultracide, and is cheaper (may change).

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The following instructions were taken from Ultracide’s product label. Please view the label for the full directions and precautionary statements.

It is a violation of federal law to use this product in a manner inconsistent with its labeling.

Shake well before use.

General Information

PT® ULTRACIDE kills fleas and prevents flea infestations for a full season. Adult fleas may be seen in the treated areas when brought in on infested animals or when adults emerge from pupal cases; however, a population will not develop in the treated area.


Use PT ULTRACIDE at the rate of 20 oz. for up to 2,625 sq. ft. Carpeted areas may be vacuumed before treatment and after treatment has dried. Treat infested areas or areas which could be infested; these include rugs, carpets, upholstered furniture, pet beds and pet resting areas. Hold can at arms length and direct spray toward the area to be treated. Use a sweeping motion to apply product and back away from treated area while holding the can 36 inches away from the surface being treated. An area of 80 – 100 sq. ft. can be treated in approximately 10 seconds with PT ULTRACIDE. When treating upholstered furniture, treat under cushions and areas where flea development occurs.

Cover aquariums and fish bowls and remove birds from area prior to treating. Treated areas should be vacated during application.

Except for applicator, do not permit humans or pets to contact treated surfaces until the spray has dried. Do not treat pets with this product.


PT ULTRACIDE has been tested on several types of carpet, fabric and other household furnishings without adverse affects. In a few instances, waxed surfaces have been whitened or dulled. Holding the can 36 inches away from the target surface normally prevents any whitening from occurring. Because of the wide variety of floor types and finishes, treat a small inconspicuous area before treating the entire area. Avoid contact with antique finishes.

Storage and Disposal

Do not contaminate water, food or feed by storage or disposal.

STORAGE: Store in a cool dry area away from heat or open flame and inaccessible to children.

PESTICIDE DISPOSAL: Wastes resulting from use of this product may be disposed of on site or at an approved waste disposal facility.

CONTAINER DISPOSAL: Do not puncture or incinerate! Empty container by using the product according to the label directions. Offer empty container for recycling, if available, or place in trash if allowed by state and local regulations. If container is partly filled, contact your local solid waste agency or call 1-800-CLEANUP for disposal instructions.

Ultracide FAQ

Is Ultracide safe and what are the side effects?

Is Ultracide safe for babies?

How long does it take Ultracide to dry?

Does Ultracide kill bed bugs?

Does Ultracide kill carpet beetles?

Does Ultracide kill cockroaches?

Can Ultracide be sprayed on furniture?

What is Ultracide’s shelf life or expiration date?

Most insecticides have a shelf life of about 3-5 years is stored properly in a temperature stable environment out of direct sunlight.

Does Ultracide work on wood, tile, and concrete floors?

Can I use Ultracide in my car?

Can I spray my dog or cat with Ultracide?

Can Ultracide be used outside in yards?

Tips for Controlling Fleas

Give Special Attention to Hot-Spots

Flea eggs can fall anywhere the infested animal wanders. However, most will accumulate in areas where the pet spends a lot of time. Flea hot-spots often occur around where the animal sleeps, grooms, and eats. In bedrooms, flea prone areas tend to be where the animal sleeps, at the side or foot of the bed. Similarly, hot-spots in living rooms will be next to seating or animal bedding.

All of the carpet in the infested room should be sprayed with a premise spray. However, special attention can be given to the potential hot-spots. And follow-up treatments, if needed, could be limited to these areas where most of the fleas are developing.

Have Realistic Expectations

A large portion of the fleas developing at the base of carpets will be unaffected by first treatment. They will eventually mature and emerge as the last generation. This can give the impression that the treatment failed, which is false. After treatment, the IGR will prevent any new eggs from developing into adult fleas. With no new generation, the infestation will end.

It’s important to have realistic expectations. The carpet treatments, like Ultracide, won’t end the infestation immediately. All of the immature stages in the environment must mature, emerge, and then die. Because they live so deep with carpets, sprays and vacuums can’t reach them. Usually it takes around 8 weeks, and sometimes longer, before the infestation ends. This is why pet treatments are continued for 3 months.

Pre-Emerged Adults

A big control issue is the pre-emerge adult life-stage. After fully maturing, cocooned adult fleas can enter into a quiescent state with extended longevity. They will remain this way, for up to 5 months, until they detect heat and pressure, which indicate a host is resting on the cocoon. Vacuuming is the best way to simulate these host cues and force emergence.

Vacuuming Procedure

Vacuum prior to spraying the carpets. Vacuuming lifts up the carpet fibers, allowing the insecticide spray to penetrate deeper into the matrix. Don’t vacuum again until the spray completely dries. Then vacuum at least every other day. There is no evidence to show that vacuuming reduces the effect of insecticides on fleas. It may actually help, by causing the adults to emerge from the cocoons and into the insecticide.

Premise Sprays Aren’t Enough

Adult fleas, accounting for 1-5% of the infestation, live on their host. Once they acquire a host, fleas won’t on their own volition. Even if the carpets get treated, fleas will continue to live on the dog or cat. And each female is capable of laying 25 eggs a day. The eggs fall anywhere the animal has access. If the eggs fall onto any untreated area, they will continue the infestation.

This is why an integrated approach is the best way to control fleas. Establishing control is faster, and maintaining control is easier, if the environment is treated, pets are treated, and manual vacuuming and cleaning is done.

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