Ectofly 12.5 mg/ml Pour-on Solution for Sheep
Active ingredient: Cypermethrin Cis 80:Trans 20
Form
Spot-on
Species
Manufacturer
Bimeda Animal Health Limited
VMD MA No.
50146/4017
What it's used for
For the prevention and treatment of blowfly strike.
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Paying less for Cypermethrin Cis 80:Trans 20
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1
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Prescription required
Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.
Ectofly 12.5 mg/ml Pour-on Solution for Sheep — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
immediately expel any remaining product in the dosing gun.
Administer by means of the recommended applicator gun as follows:
Blowflies:
Prevention of blowfly strike
Bodyweight Dose Doses per litre
Up to 25 kg* 20 ml 50
25 to 40 kg 30 ml 33
Over 40 kg 40 ml 25
*Do not administer to animals of less than 12.5 kg bodyweight.
The dose should be limited to a maximum dose of 40 ml per animal
AN: 03408/2024 & 03411/2024
Apply as a fan-spray to the surface of the fleece on the back and hindquarters of the sheep
using the Pour-On Gun fitted with the fan-spray nozzle. Half the dose should be applied to
the shoulders, back and flanks, and half to the rump.
The distance between the nozzle and the fleece should be approximately 20 cm. Each
dose will require 2 or 3 sweeps to apply. THE PRODUCT WILL PREVENT BLOWFLY
STRIKE ONLY ON AREAS COVERED BY SPRAY. One application will give 6-8 weeks
protection. Re-treat as required.
Treatment of blowfly strike
Apply directly to all the affected parts at the rate of 2.5 ml per 100 –150 cm
(roughly the
size of a hand). The T-bar nozzle should be used. Most strikes will require 5-10 ml.
Ensure that all affected parts are treated. A single application is sufficient to ensure that
larvae are expelled and killed within a few hours.
Lice: 5 ml per 20 kg bodyweight up to a maximum of 20 ml.
Bodyweight Dose Doses per litre
Up to 20 kg 5 ml 200
21 to 40 kg 10 ml 100
41 to 60 kg 15 ml 66
Over 60 kg 20 ml 50
Using the straight nozzle on the applicator gun, apply as a pin-stream from the shoulders to
the rump along the middle of the backline.
AN: 03408/2024 & 03411/2024
Sheep may be treated off-shears or at any time during the year.
Ticks: Adult sheep and lambs greater than 10 kg: 10 ml per 20 kg bodyweight, up to a
maximum of 40 ml. Lambs under 10 kg: 5 ml followed 3 weeks later by a 10 ml application.
Bodyweight Dose Doses per litre
Up to 10 kg 5 ml 200
11 to 20 kg 10 ml 100
21 to 40 kg 20 ml 50
41 to 60 kg 30 ml 33
Over 60 kg 40 ml 25
Using the straight nozzle on the Pour-On Gun, apply as a pin-stream from the crown of the
head to the top of the rump.
Headflies: 5 ml per animal irrespective of size.
Apply to the top of the head between the ears using the T-bar nozzle.
Take care not to apply product in the sheep’s eyes.
One application before the start of the headfly season will give up to 4 weeks protection.
Re-treat as required.
This product contains a dye to aid in the identification of treated animals. The colour is
temporary and will fade from the fleece within 48 hours of application.
AN: 03408/2024 & 03411/2024
For the prevention of blowfly strike; do not administer to animals of less than 12.5 kg
bodyweight.
Avoid treating very young lambs if the weather is unseasonably hot.
Do not use in cases of hypersensitivity to the active substance or to any of the excipients.
Reporting adverse events is important. It allows continuous safety monitoring of a veterinary
medicinal product. Reports should be sent, preferably via a veterinarian, to either the
marketing authorisation holder or its local representative or the national competent authority
via the national reporting system. See the package leaflet for respective contact details.
development of resistance.
AN: 03408/2024 & 03411/2024
Special precautions for safe use in the target species:
Care must be taken not to apply the product right to the lamb’s tail, as a ewe recognises a
young lamb partly by the smell of the tail area.
Blowflies are attracted by dirty, damp wool or open wounds. The most common site for fly
strike is the rump due to soiling caused by diarrhoea and urine staining. The efficacy of the
product is reduced in the presence of soiled or dirty wool. Therefore, sheep must be
crutched (dagged) regularly and appropriate worm control measures employed.
Take care not to apply product in the sheep’s eyes. This precaution should be observed
particularly when treating breeds with little wool on their heads.
Full operating and maintenance instructions, including details on the use of nozzles, are
supplied with each Pour-On Gun. Please read carefully before use. Maintain gun carefully to
ensure accurate dosage.
For external use only.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
This product is harmful if swallowed and may cause skin, eye or respiratory irritation. This
product may also cause hypersensitivity reactions.
Avoid skin and/or eye contact.
Avoid children from getting access to the product or treated animals.
Use in a well-ventilated area and avoid inhaling the vapour.
Wear eye protection, protective clothing, rubber gloves and boots when applying the
product and handling the animal until the product has dried.
Wear a disposable face-mask when applying as a fan-spray for the prevention of blowfly-
strike.
Make sure when attaching the recommended applicator gun onto the container that the
coiled retainer is secured onto the cap and the applicator.
Wash splashes from skin and eyes immediately with plenty of clean water. If irritation
persists seek medical advice immediately and show the package leaflet to the physician.
Remove contaminated clothing immediately and wash exposed skin with plenty of clean
water.
Do not eat, drink or smoke whilst using the product. Wash hands immediately after use.
In case of accidental ingestion or mouth contact, immediately rinse the mouth with plenty of
water and seek medical advice.
Special precautions for the protection of the environment:
Cypermethrin is extremely toxic to aquatic and dung organisms
As a precautionary measure sheep must be kept away from watercourses for at least 12
hours following treatment (see ‘Environmental properties’). Given the risks to the
environment the use of the product should be limited to one treatment per year per pasture.
Long term effects on dung insects caused by continuous or repeated use of pyrethroid
ectoparasiticides cannot be excluded. Therefore repeated treatment of animals on the same
AN: 03408/2024 & 03411/2024
pasture with a pyrethroid-containing product within a season should only be given in the
absence of alternative treatments or approaches to maintain animal/flock health, as advised
by a veterinarian.
may have a detrimental effect on certain components of conventional dosing guns.
Protect from direct sunlight.
Store in tightly closed original container in a safe place.
Store away from food, drink and animal feeding stuffs.
Milk: 5 days
This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.
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Other Products Containing Cypermethrin Cis 80:Trans 20
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Crovect 1.25% w/v Pour-on Solution for Sheep
POM-VPSElanco GmbH
Crovect 1.25% w/v Pour-on Solution for Sheep
POM-VPSElanco GmbH
Fly Off 12.5 mg/ml Pour-on Solution for Sheep
POM-VPSBimeda Animal Health Limited
MoleEcto 12.5 mg/ml Pour-on for Sheep
POM-VPSElanco Europe Ltd
Vectocert 1.25 % w/v Pour-on Solution for Sheep
POM-VPSBimeda Animal Health Limited
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