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Screw Worm Aerosol

This page contains information on Screw Worm Aerosol for veterinary use.
The information provided typically includes the following:
  • Screw Worm Aerosol Indications
  • Warnings and cautions for Screw Worm Aerosol
  • Direction and dosage information for Screw Worm Aerosol

Screw Worm Aerosol

This treatment applies to the following species:
Manufacturer: Durvet

Multi-Purpose Insecticide Spray

• WOUND SPRAY: Kills flies and maggots.


• CONTROLS TICKS (Including ear ticks on livestock).


• PREMISE SPRAY (multiple pests, as listed throughout label).








*(3-phenoxyphenyl)methyl (+/-) cis/trans 3-(2,2-dichloroethenyl)-2,2-diemethylcyclo- propanecarboxylate (Cis/Trans ratio: Min. 35% (+/-) cis and max. 65% (+/-) trans.)

** Contains petroleum distillates




First Aid

If Inhaled: move person to fresh air. If person is not breathing, call 911 or an ambulance, then give artificial respiration, preferably mouth to mouth if possible. Call a poison control center or doctor for further treatment advice.

If Swallowed: call a poison control center or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by a poison control center or doctor. Do not give anything by mouth to an unconscious person.

If in Eyes: hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present, after first 5 minutes, then continue rinsing eye. Call a poison control center or doctor for treatment advice.

If on Skin or Clothing: take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a poison control center or doctor for treatment advice.

For emergency information contact: National Pesticide Information Center at 1-800-858-7378 between 6:30 am and 4:30 Pacific Time. After 4:30 call your poison control center. Have the product container or label with you when calling a poison control center or doctor, or going for treatment.


Hazards To Humans & Domestic Animals

Screw Worm Aerosol Caution

Harmful if swallowed, absorbed through the skin, or inhaled. Causes moderate eye irritation. Avoid breathing spray mist. Avoid contact with skin, eyes, or clothing. Wash thoroughly with soap and water after handing and before smoking or eating. Remove contaminated clothing and wash before reuse. Avoid contamination of feed and foodstuffs.

Environmental Hazards

This product is extremely toxic to aquatic organisms, including fish and invertebrates. To protect the environment, do not allow pesticide to enter or run off into storm drains, drainage ditches, gutters or surface waters. Applying this product in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area.

Rinsing application equipment over the treated area will help avoid run off to water bodies or drainage systems.

This product is highly toxic to bees exposed to direct treatment on blooming crops or weeds. Do not apply this product or allow it to drift to blooming crops or weeds while bees are actively visiting the treatment area.

Physical or Chemical Hazards

Contents under pressure. Do not use or store near heat or open flame. Do not puncture or incinerate container. Exposure to temperatures above 130° F may cause bursting.

Directions For Use

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

Use Restrictions

Do not breathe dust, vapors or spray mist.

Do not apply when food is present.

When used in dairy barns and faculties: Close milk bulk tank lids to prevent contamination from spray and from dead or fallen insects. Remove or cover milking utensils before application. Wash teats of animals before milking.

When applying as a space spray, remove people and pets from the area before spraying. Except when applying to pets or livestock, do not enter or allow others to enter until sprays have dried.


Remove protective cap, hold container upright and spray from a distance of 12 to 15 inches.

IN ANIMAL QUARTERS AND MILK ROOMS: For rapid control of House Flies, Mosquitoes, Gnats, Wasps, Hornets, Bees and Small-Flying Moths. Remove animals prior to treatment, close windows and doors and spray at the rate of 2 seconds per 1000 cubic feet of space. For best results, keep area closed for 10 minutes after spraying. Do not remain in treated area and ventilate after treatment is completed.

TO TREAT LIVESTOCK: To protect beef cattle, dairy cattle, goats, sheep, hogs and horses from attacks of Stable Flies, Horse Flies, Deer Flies, Face Flies, House Flies, Horn Flies, Mosquitoes, Ticks and Gnats: Spray about 3 seconds on each side being careful to spray back, withers and forelegs thoroughly. To protect from Face Flies, spray the face and head, but do not spray into eyes. Repeat treatment when flies are troublesome. For ear ticks spray directly into ear.

WOUND SPRAY and to kill SCREW WORMS, flies and maggots infesting beef cattle, horses and sheep, hold can about 4 to 8 inches from the area to be treated with nozzle pointed at wound. Spray the area until it is completely wet (3 to 10 seconds are usually enough). The area surrounding the wound should also be sprayed. This product is not recommended for use in deep wounds. Note on Resistance: Some strains of screw worm may develop resistance to pyrethroids. This will be observed by lack of response to treatment. Where pyrethroid resistance is known or suspected, this product should not be used.

FOR SWINE: Do not ship animals for slaughter within 5 days of last treatment.

TO CONTROL BLOOD SUCKING LICE: Apply to the infested areas of the animal, using a stiff brush to get the spray to the base of the hair. Repeat every 3 weeks if required.

TO CONTROL POULTRY LICE: Spray roosts, walls, and nests or the cages thoroughly. This should be followed by spraying over the birds with a fine mist.

FOR CONTROL OF BEDBUGS AND MITES IN POULTRY HOUSES: Spray crevices of roost poles, cracks in walls, and cracks in nests where the bedbugs and mites hide.

Storage And Disposal

Do not contaminate water, food or feed by storage or disposal. PESTICIDE STORAGE: Store in cool, dry place away from children, preferably a secure storage area. CONTAINER DISPOSAL: Do not puncture or incinerate! If empty: Place in trash or offer for recycling if available. If partly filled: Call your local solid waste agency for disposal instructions.

NOTICE: It is impossible to eliminate all risks inherently associated with the use of this product. Ineffectiveness or other unintended consequences may result because of such factors as weather conditions, presence of other materials, or the manner of use or application, all of which are beyond the control of DURVET INC., the manufacturer or seller. To the extent consistent with applicable law, DURVET INC., the manufacturer or seller shall not be liable for consequential, special or indirect damages resulting from the use or handling of this product. Except as warranted by the label, DURVET INC., the manufacturer or seller makes no warranties, guarantees, or representations of any kind, either express or implied, or by usage of trade, statutory or otherwise with regard to the product sold or use of the product, including, but not limited to, merchantability, fitness for a particular purpose or use, or eligibility of the product for any particular trade usage. To the extent consistent with applicable law, Buyer’s or user’s exclusive remedy, and DURVET INC.’S, the manufacturer’s or seller’s total liability shall be limited to damages not exuding the cost of product.

EPA REG. NO. 47000-100-12281

EPA EST. NO. 47000-IA-1

Mfr. for: DURVET, Inc., 100 S.E. Magellan Dr., Blue Springs, MO 64014



12 oz. (340g)

Iss. 11/13

NAC No.: 1084189.4

Telephone:   816-229-9101
Toll-Free:   800-821-5570
Fax:   816-224-3080
Every effort has been made to ensure the accuracy of the Screw Worm Aerosol information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the US product label or package insert.

Copyright © 2016 North American Compendiums. Updated: 2016-06-30