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BASF

Fendona CS Insecticide

Fendona CS Insecticide is a broad-spectrum microencapsulated insecticide with a controlled-release formula. Its active ingredient, cypermethrin, quickly kills various insects and continues working months after application.

As low as $47.95
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Fendona CS Product Page
Min : 47.95 - Max : 258.99
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Price as of
09/13/25
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Fendona CS Insecticide, manufactured by BASF, is a fast-acting and long-lasting controlled release insecticide labeled to treat more than 60 different pests such as spiders, wasps, flies, fleas, ticks, bed bugs and ants.

The active ingredient cypermethrin, is integrated with micro-encapsulated technology which gives it outstanding residual protection for up to 90 days.

Fendona CS is a fast and effective residual insecticide with no odor and will not stain surfaces. This unique formula decreases the cost of labor with its long-term residual against a broad spectrum of indoor and outdoor pests. 

Tools Needed

You will need a hose-end sprayer, handheld pump sprayer, backpack sprayer, or professional spray rig. We recommend a handheld 1-gallon pump sprayer for small household jobs or a 4-gallon backpack sprayer.

How to Use

  • Step 1: Determine how much Fendona CS to use by measuring the square footage of the treatment area. To find the square footage, measure the treatment area's length and width in feet, then multiply them together (length X width = square footage). Fendona CS Insecticide can be mixed with either 1 or 2 fluid ounces per gallon of water to treat 1,000 sq. ft. Refer to the product label for specific application rates and restrictions. 
  • Step 2: Fill your sprayer halfway with water and add the appropriate amount of Fendona CS. Fill the sprayer the rest of the way with water and shake it well, and you are ready to apply.
  • Step 3: Apply the Fendona CS mixture in a coarse, low-pressure spray setting to the target area where you have pest problems. To create an insect barrier, apply a band 10 feet wide around the perimeter and up to 3 feet high on a foundation. Use all around structures and in cracks and crevices where bugs reside.

Where to Use

Fendona CS Insecticide is labeled to be used in and around commercial, industrial, and residential areas and buildings including agricultural buildings, airports, animal confinement buildings and pens, apartments, cafeterias, calf hutches, calving pens and parlors, campgrounds, empty chicken houses, churches, commercial buildings, convenience stores, cruise ships, dairy areas, dairy parlors, day care centers, dog kennels, egg laying facilities, food handling facilities, good processing plants, food storage areas, food vendors, garbage receptacles and corrals, golf courses, grain mills, granaries, health care facilities, hog barns, homes, horse barns and arenas, hospitals, hotels, industrial buildings, landscapes, lawns, libraries, malls, meat packing plants, milkrooms, motels, museums, nursing homes, ornamental plants, outdoor living areas, poultry houses, rabbit hutches, recreational areas, resorts, restaurants and other food handling establishments, schools, supermarkets, terminals, theme parks, trailers, transportation equipment (buses, boats, ships, trains, trucks, and planes – cargo areas only) utilities, washrooms, and warehouses.

When to Use

Apply when pest activity is high. The slow release of its active ingredient makes this product a perfect perimeter barrier treatment to defend against re-infestation during seasons when pests are more prone to manifest. For most areas of the country, this is between March and October. If you want year-long control of pests, you will want to spray every three months.

Safety Information

Fendona CS is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product. 

Do not allow children or pets to contact treated surfaces until the spray has dried.

Special Considerations

Fendona CS is a microencapsulated insecticide so that means it can settle out once diluted in water. Because of this, anything you mix up must be used the same day. It is also necessary to constantly agitate the solution in a spray tank during treatment.

AvailabilityOnline
Restricted UseNo
Shipping Restrictions16 Ounce: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
120 Ounce: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
BrandBASF
Keith's Pro Tips"While Fendona CS has a long residual effect, repeat applications should be done more often if you have a heavy infestation. If a second application is needed, do it at an interval of 3 days apart, but no more than twice per week."
Product DrawbacksMay require constant agitation during application to keep the mixture suspended.
Target PestsAnts, aphids, armyworms, asian lady beetles, bagworms, bed bugs, bed bud eggs, billbugs (adults), boxelder bugs, brown marmorated stinkbugs, cadelles, carpenter ants, carpenter bees, carpet beetles, caterpillars, cheese mites, chiggers, chinch bugs, chocolate moths, cigarette bettles, clothes moths, clover mites, cluster flies, cockroaches, crickets, cutworms, darkling beetles, dermestids, drugstore beetles, drywood termites, earwigs, elm leaf beetles, fire ants (foragers), firebrats, fleas flour beetles, fruit flies (Drosophila), fruitworms, grain weevils, grasshoppers, harvester ants (foragers), hide beetles, house flies, indian meal moths, Japanese beetles, kudzu bugs, lace bugs, larder beetles, leafrollers, lesser grain borers, lesser mealworms, litter beetles, loopers, mealy bugs, mediterrean flour moths, merchant grain beetles, mealworms, millipedes, mosquitoes, pharaoh ants (foragers), pillbugs, plant bugs, psocids, psylla, rice weevils, sawtoothed grain beetles, scale insects, scropions, silverfish, sod webworms, southern fire ants (foragers), sowbugs, spiders (including black widow and brown recluse), springtails, stable flies, tent caterpillars, thrips, ticks, warehouse beetles, whiteflies, wood wasps, wood infesting beetles and borers, and yellowjackets.
Application EquipmentBackpack Sprayer, Pump Sprayer, Spray Rig
Application MethodsCrack & Crevice, Spot Treatment
Active Ingredient3% alpha-cypermethrin
Product TypeInsecticide
FormulationMicroencapsulated
Application Rate1 fluid ounces or 2 fluid ounces per 1,000 square feet To use this product with larger tank sizes as perimeter treatment apply at a rate of 15 gallons of water per 1.5 to 2.5 fluid ounces of water. Or 25 gallons of water per 2 fluid ounces to 4 fluid ounces of product. Or 50 gallons of water per 4 fluid ounces to 8 fluid ounces of product. Or 100 gallons of water per 8 to 16 fluid ounces of the product.
Shelf LifeFendona CS has a shelf life of 3 years if stored in a cool dry environment. If product separation occurs just shake bottle prior to use.
YieldIn its 120-ounce bottle when using the highest rate of 20 ounces, you got an incredible yield of more than 10 gallons of finished product.
Use SitesIndoors, Outdoors
Time to KillFendona CS kills insects within an hour of being exposed to the active ingredient but some can take up to 24 hours.
Comparable ProductsDemand CS
EPA Registration #499-570
More Information
Restricted Use No
Shipping Restrictions AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
Availability Online
Signal Word CAUTION
Keith's Pro Tip "While Fendona CS has a long residual effect, repeat applications should be done more often if you have a heavy infestation. If a second application is needed, do it at an interval of 3 days apart, but no more than twice per week."
Target Pests Multi Ants, Aphids, Armyworms, Asian Lady Beetle, Bagworms, Bed Bug Eggs, Bed Bugs, Bees, Beetles, Billbugs, Black Widow Spiders, Boxelder Bugs, Brown Recluse Spiders, Cadelles, Carpenter Ants, Carpenter Bees, Carpet Beetles, Caterpillars, Cheese Mites, Chiggers/Red Bugs, Chinch Bugs, Cigarette Beetles, Clothes_Moths, Clover Mites, Cluster Flies, Cockroaches, Crickets, Cutworms, Darkling Beetles, Dermestid Beetles, Drugstore Beetles, Drywood Termites, Earwigs, Elm Leaf Beetles, Fire Ants, Firebrats, Fleas, Flour Beetles, Fruit Flies, Fruitworms, Grain Weevils, Grasshoppers, Harvester Ants, Hide Beetles, House Flies, Indianmeal Moths, Japanese Beetle, Kudzu Bugs, Lace Bugs, Larder Beetles, Leafrollers, Lesser Grain Borers, Lesser Meal Worm, Litter Beetles, Loopers, Mealworms, Mealybugs, Mediterranean Flour Moth, Merchant Grain Beetles, Millipedes, Mosquitoes, Pharaoh Ants, Pillbugs, Plant Bugs, Psocids, Psylla, Rice Weevils, Saw-Tooth Grain Beetles, Scale Insect Crawlers, Scorpions, Silverfish, Sod Webworms, Southern Fire Ants, Sowbugs, Spiders, Springtails, Stable Flies, Stink Bugs, Tent Caterpillars, Thrips, Ticks, Tobacco Chocolate Moths, Warehouse Beetle, Whiteflies, Wood Borers, Wood Wasps, Wood-Infesting Beetles, Yellow Jackets
Time to Kill Fendona CS kills insects within an hour of being exposed to the active ingredient but some can take up to 24 hours.
Chemical Type Insecticide
Formulation Microencapsulated
Application Methods Crack & Crevice, Spot Treatment
Product Drawbacks May require constant agitation during application to keep the mixture suspended.
Active Ingredient 3% alpha-cypermethrin
Application Equipment Backpack Sprayer, Pump Sprayer, Spray Rig
Mix Rate 1 fluid ounces or 2 fluid ounces per 1,000 square feet To use this product with larger tank sizes as perimeter treatment apply at a rate of 15 gallons of water per 1.5 to 2.5 fluid ounces of water. Or 25 gallons of water per 2 fluid ounces to 4 fluid ounces of product. Or 50 gallons of water per 4 fluid ounces to 8 fluid ounces of product. Or 100 gallons of water per 8 to 16 fluid ounces of the product.
Use Sites Indoors, Outdoors
Yield In its 120-ounce bottle when using the highest rate of 20 ounces, you got an incredible yield of more than 10 gallons of finished product.
EPA Registration No. 499-570
Shelf Life Fendona CS has a shelf life of 3 years if stored in a cool dry environment. If product separation occurs just shake bottle prior to use.
Comparable Products Demand CS
Children or pets? No
Property Characteristics Food-Bearing Plants

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