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FenvaStar EcoCap

Walt Cline - Pest Control Professional Pro Tip: "Fenva Star EcoCap is a product I often reach for in our retail store. It is labeled for a wide variety of insects and is really economical to use.
I don't like it so much for German roaches. The roach baits are the way to knock those guys out.

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FenvaStar EcoCap

Availability: In stock

FenvaStar EcoCap
FenvaStar EcoCap is approved for use in New York and and may be used for indoor food and non-food areas, including broadcast spray, livestock and poultry premises and outdoor structural and turf uses.

Prop65 California Proposition 65 WARNING

FenvaStar EcoCap

FenvaStar EcoCap 8 fl oz tip-n-measure bottle

  • Buy 2 for $12.50 each and save 21%
FenvaStar EcoCap

FenvaStar EcoCap 1 gal tip-n-measure bottle

  • Buy 2 for $154.50 each and save 4%



FenvaStar EcoCap

FenvaStar EcoCap has the same active ingredient Esfenvalerate as Conquer, but is encapsulated having a residue of 2-3 months. The quick knockdown and long term residual work well on various surfaces even after rain and sun exposure making it a number one all around pest control product.

With a very low odor, it has a very good knockdown for bedbugs, carpenter bees, fleas, mosquitoes, roaches, flies, stinging insects and more. FenvaStar EcoCap won't clog your sprayer.

FenvaStar EcoCap - Approved in New York

FenvaStar EcoCap is approved for use in New York and and may be used for indoor food and non-food areas, including broadcast spray, livestock and poultry premises and outdoor structural and turf uses.


Compare FenvaStar ECO CAP to Onslaught Insecticide and Conquer

All have the same active ingredient, Esfenvalerate

Product Size % Esfenvalerate Yield Residual

FenvaStar ECO CAP

  • Encapsulated
  • Very Low Odor

8 oz

128 oz

3.5 %

8 oz yields 4-8 gallons
finished product

1 gallon yields 64-128 gallons
finished product

2-3 months

Conquer Insecticide

  • Not encapsulated
  • Low Odor
16 oz 3.5 % 8 gallons
finished product
3-4 weeks

Onslaught Insecticide

  • Encapsulated
  • High Odor
16 oz. 6.40 % 16-32 gallons
finished product
2-3 months
Additional Information

Additional Information

Pro Tips Fenva Star EcoCap is a product I often reach for in our retail store. It is labeled for a wide variety of insects and is really economical to use.
I don't like it so much for German roaches. The roach baits are the way to knock those guys out.
Packaging 8 oz (LGFC008 ) and 128 oz ( gallon) (LGFC128)
Manufacturer LG Life Sciences
Product Label Product Label
More PDF's No
Target Pest N/A
Active Ingredient (s) Esfenvalerate ..... 3.5%
For Use :

Inside and Outside

In food and non-food areas such as, but not limited to: homes, schools, warehoused, office buildings,k apartment buildings, theaters, hotels, industrial buildings, motels, kennels, livestock, food processing planmts, food servce establishments, restaurants, supermarkets and grocery stores, transportation equipment, truck trailers, Railroad cars, and food manufacturing establishments. Also for use on backyards, lawns, trees, ornamental landscaping, recreational areas, parks and athletic fields.

Yield 8 oz yields 4-8 gallons, gallon yields 64-128 gallons
Mixture|Application Use 1 to 2 oz per gallon of water
Application No
Retreatment 2-3 months
Shipping Restrictions CT
More Instructions

Fenvastar EcoCap should be mixed with water and applied with hand pressurized or power operated sprayers. Shake container of Fenvastar EcoCap before diluting. Clean spray equipment before use. For dilution, add approximately half the required water to spray tank and then add the appropriate amount of Fenvastar EcoCap. Agitate and slowly add the remaining water.


Agitate spray thoroughly before using and also occasionally during use to ensure dispersion. If spray filter screens are used, they should be 50 mesh or larger. Use 1.0 fluid ounce (30 cc.) of Fenvastar EcoCap in 1 gallon of water to make a spray mix containing 0.025% active ingredient.


Use 2.0 fluid ounces (60 cc.) per gallon of water to make a spray containing 0.05% active ingredient. Use 0.025% solution, for light infestations or as a maintenance control rate. Use 0.05% for heavy infestations or as an initial clean out rate. Apply two-second bursts of spray per square foot of area being treated. Avoid excessive application. Dampen surfaces but not to the point of saturation or run-off.


Customer Reviews 31 item(s)

didn't work
I sprayed twice within three weeks. Didn't stop the wood boring bees. They have drilled perfect holes in at least three places-right on top of the area I sprayed!!
Review by Charmaine / (Posted on 5/30/2020)
Worked great combined with Gentrol Aerosol on Confused Flour Beetle infestation, from old BirdSeed.
Review by JIC / (Posted on 1/5/2020)
Will continue to buy
I have been buying from this company for many years. Very good products
Review by Tbultt / (Posted on 11/6/2019)
Great product
Regarding fleas this product requires adding an "IGR" (internal growth regulator) as mentioned by others. The "Fenvastar Ecocap" will kill the adult fleas, while the "IGR" kills the hatchlings and deforms the eggs. It is a great product!
Review by KarlwithaK / (Posted on 11/1/2019)
Combine with an IGR (like Tekko Pro)
It needs to be combined with an IGR (like Tekko Pro), but it works well. It took a couple of sprayings every couple weeks before it really got the job done.
Review by David / (Posted on 8/12/2019)
Great product and easy to use.
Great product with good results. Ordering was easy and shipping was fast.
Review by Effective / (Posted on 7/23/2019)
Product works as intended.
Sprayed directly on cedar bees, nothing happened. 3 days later , cedar bees vanished. Hopfuly the bee was a vehicle to take poison deep into the nest.
Review by #H8T CEDRB's / (Posted on 5/23/2019)
Fast and Effective
This stuff worked fast and was super effective on our flea problem when I combined it with the IGR.
Review by Travis / (Posted on 4/12/2019)
I think they're finally dead...
Had a massive flea infestation that I unknowingly brought upon myself after a long day of yard work. It was a long fight (had a "hatch" after a couple of weeks, but not due to this product) and the combination of EcoCap and and IGR seems to have taken them out. I also had an immense amount of laundry to do in scalding hot water...just one more element to take into consideration along with having to treat my two cats who NEVER go outdoors. A lot of work moving things around to spray all the carpets, but that's what you have to do if you want to win.
Review by Fleabag / (Posted on 8/13/2018)
All OK.
Seem to work pretty well. Fast service. I am satisfied.
Review by Dr Sam / (Posted on 4/9/2018)
It worked as well as expected for bed bugs nothing kills them in one treatment as some say. This wortked great.
Review by Patty / (Posted on 2/3/2018)
Great service
Great product great prices
Review by Vinny / (Posted on 5/1/2017)
Great product, worked wonders
We lease a 5200 sq ft. warehouse. Our area also has an issue with feral cats. Needless to say, the cats found their way into our warehouse via an open window (we are located in the tropics) and brought with them a massive flea infestation. One corner of the warehouse was completely impassable. You would walk back there and come out with around 50 fleas crawling up your legs. Im itchy just thinking about it. So I called up DIY Pest Control and got awesome advice from the customer service guy.

I ordered the Ecocap with the combination of an IGR, as suggested by DIYPC.

We cleaned our warehouse extensively, got everything off the floor and swept. Then we mixed up this stuff and covered all 5200 sq ft.

I went back the next day and saw lots of dead cockroaches and did not have any fleas on me. The following day a had 3 fleas on me, but you could tell that they were weak. haha

Its now been 2 weeks and I havent seen anymore. It seems that it took a little time for the IGR and the Ecocap to destroy the lifecycle and just take em out.

I would recommend this product and DIY Pest Control overall. Awesome serive, great prices, and cool people. Thanks again!
Review by Swede / (Posted on 6/30/2016)
Very Good repel of ants
I went on here looking as a research only and purchased 2 bottles of this FenvaStar, I have only used 1.5 ounces mixed with 1 gallon water in my sprayer. Now I also used 4 ounces of Garlic Barrier with 1 gallon of water on the same week. it is has been 2 weeks since I sprayed both products. THERE ARE NO PEST anywhere. FRONT BACK SIDES - GONE!! - We will see once JULY Comes but I intend to spray the same dose with both product every 30 days -At 1.5 ounces This S**it will last all year. So for $1.96 per ounce that is a great return on investment for the season. 6 months - For those who have fleas - Wash your house, your infested and so is your house.
Great product- Great Company! Buy American-
Review by Mike / (Posted on 5/14/2016)
Works on Carpenter Bees
I sprayed this on my screened in porch to stop the carpenter bees from making new holes. So far haven't found any new holes
Review by Larry K / (Posted on 5/2/2016)
ain't doing it
Have treated area 3 times... still have fleas. No pet access or other activity...

*********DIY Response********

Fleas can be difficult to eliminate. Fenvastar EcoCap is a good choice to kill the adult fleas but it should always be used with an Insect Growth Regulator (IGR) for control of the pre-adults. Feel free to contact us at 800-476-3368 for our recommendations.
Review by kansan / (Posted on 12/13/2015)
Good product
This product didn't have an odor that we noticed or was objectional. It was effective in killing fleas. You have to use the IGR with it which we didn't do the first application.
Review by Dr. Dre / (Posted on 9/30/2015)
I had fleas all over the house thanks to my little cat. I started with vacuuming and then sprayed with FenvaStar EcoCap mixed with an insect growth inhibitor (Tekko Pro IGR); and left the house for 4 hours. Very little odor. I did not wash the floors for two weeks, just left the spray to dry and do its work. After the initial spray, I waited two weeks while watching for more fleas. They showed up, but were seemingly weakened. I vacuumed and washed the floors and sprayed again with the same mix and haven't seen any more fleas...yet. It has been almost three weeks since the second spray. I am ready if I have to spray again, but hope they are gone for good.

Thanks to DIY Pest Control this nightmare seems to be over.
Review by Susan M. / (Posted on 8/19/2015)
It does not kill fleas
Finished the whole bottle in our garage (applied twice). Followed instructions but fleas are still alive. Dont know what to buy anymore. I bought this product based on the reviews but I guess this product was not meant to kill fleas.
Review by Jane / (Posted on 8/11/2015)
I would recommend this product.
It is effective on contact. I use it for flies and bedbugs.
Review by Tom / (Posted on 7/28/2015)
Effective product at a great value
My neighbor paid $500 for a professional pest control service to rid their wooden play set of carpenter bees. When ours became infested I searched the internet for appropriate solutions and FenvaStar EcoCap is an effective first step in a two-step process.
All together I spent $44 and the bees haven't come back.
Review by Kills within a minute or two / (Posted on 6/28/2015)
Very Good Product
I have purchased 2 bottles of FenvaStar. It works effectively. Not much odor. Easy to understand instructions. For mixing water, it soaks the areas that are being sprayed. I would recommend this product to anyone.
Review by Fangi / (Posted on 10/4/2014)
Bought this because my neighbor got roaches and inevitably so did we as we share walls. I have children and am scared for them. I sprayed with 2oz. mix and they were still here, waited a week sprayed same again.... Guess what they are walking thru it as if all I sprayed was water. I am also using Gentrol, Max force bait stations, Max Force bait in both apartments. What am I to do now?!? I don't sleep, eat or even function. I cry all the time, I cannot move because of lack of money. This pretty much sucks!!!!!!

DIY Response: Sorry the FenvaStar didn't work for you. While cockroaches are on the label for FenvaStar, the MaxForce and Gentrol products are a much better solution, but they do require time to work. The Maxforce Bait is for killing the adult roaches, and the Gentrol is used to sterilize the remaining live ones so are unable to reproduce. If you need assistance please call us at: 1-800-476-3368
Review by Mad Momma / (Posted on 10/1/2014)
Flea invasion
Product works...would give in 10 stars.
Review by Blairsville Bob / (Posted on 9/29/2014)
Low odor, killed like a thermonuclear weapon, but does it last?
Bought this product to fight a flea infestation. After living here for 11 years with no fleas, they made up for it this year. Bam! Fleas everywhere, almost overnight. If you've never had fleas, they are nasty little buggers. After wasting money on the usual useless junk from the local big box stores, I came here to get something that would work.

DIY Pest Control shipped *fast* and I got it *fast*.

Mixed it up per the instructions - 2 OZ per gallon and sprayed the house. It has a small smell, but nothing overpowering. This made the family happy, as we had expected it to smell awful. But it didn't. :) My wife even commented that she was pleasantly surprised that it didn't smell. This probably saved me the cost of a hotel room for the night. ;)

Like a small thermonuclear weapon, it seemed like it killed everything with nothing having survived. Far better than the worthless garbage from the big box store.

About a week later, we're seeing some additional fleas around the house that I probably missed in the first spraying. (I did combine this with Meteor IGR, so that's the only thing I can figure.)

Question for the pros - I've seen some fleas happily bouncing thru the areas where I had sprayed. Should the residual product kill these guys? Or am I seeing them happily bouncing around minutes before their untimely, accelerated deaths?

Answer: Yes, it does take a few hours for the insecticide to enter the nervous system of the flea to kill it.

thanks much,
Review by Ben / (Posted on 8/14/2014)
Does not work for carpenter bees!
I ordered this product for the control of carpenter bees. I have applied it generously twice and it has not helped at all. Please advise if I have purchased the wrong product.

DIY Response:
Sorry to hear you're not finding the product effective. The goal in Carpenter Bee treatment is to stop them from damaging your house. FenvaStar EcoCap is a suitable treatment for this goal. FenvaStar is a repellent and it keeps female Carpenter Bees from drilling new holes. It will also kill them if they land on it, but they can detect it and typically wont land where you have sprayed it. Its also normal to see the males fly around after application, but they are harmless. If you have existing holes that are problematic, give us a call at 1-800-476-3368.
Review by Roger / (Posted on 4/29/2014)
Great stuff!
I have used this product for over a year now. Encapsulated products ARE the way to go for good pest control. I had a company come every month and had bugs. I did some research, then bought a sprayer and have done my own from then on. FenvaStar EcoCap is MY choice for pest control because it is so flexible. For general pest control I use one once per gallon of water. During the summer I bump it to two per gallon and have not seen a bug in a LONG time. I do crack and crevice treatment as well as treating the voids under my cabinets. It has worked for me. There are a lot of good choices out there but if it's not encapsulated I won't use it.
Review by Mickey / (Posted on 4/22/2014)
fenva star on fleas
Fenva Star eco cap kicked the crap out of the fleas in less than a week and they're still gone. Great product nuff said
Review by charles / (Posted on 10/24/2013)
Three days and itch free
I made the mistake of talking home a used mattress. So about 2 weeks went by when I realized what my bumps where from. I saw a live under the mattress. I disposed of the bed and spayed it with Bedlam (the frame). I lifted up my carpeting and added DE Dust. I thought that'd be enough but, 5 weeks passed and still getting see bites.

So I bought this last week and mixed with Gentrol (BB birth control). Didn't notice anything the first day, second was less itching, and third day no itching. I also spayed my whole outside building, porch. My dislike is the smell, it makes my noise run too..
Review by Nichole / (Posted on 9/21/2013)
A great product for bed bugs. I wish I knew about it before I spent all that money on stuff from the hardware store THAT DIDN'T WORK!!!
Review by Donnie / (Posted on 9/18/2013)
I have worked in the pest control industry for a little over three years. This is what I use to treat my apartment. During the summer monsoons I bump it to 2 oz per gal and drop it to 1 oz during the fall, winter and spring. It has proven very effective. I am sold on the effectiveness of micro-cap insecticides. During the hot summer months they are the only product worth buying.
Review by Joseph / (Posted on 9/4/2013)

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