Flydown Delta 10 mg/ml Pour-on Solution for Cattle and Sheep

To avoid resistance, the product should only be used if the susceptibility of the
local fly population to the active substance is assured. If clinical signs do not
resolve following treatment, the diagnosis should be revised.
Cases of resistance to deltamethrin have been reported in stinging and
nuisance flies in cattle and lice in sheep.
In countries with recognised resistance to deltamethrin the use of the product
should ideally be based on results of susceptibility testing. Please, ask your
veterinarian for further information.
The product will reduce the number of flies resting directly on the animal but it
is not expected to eliminate all flies on a farm. The strategic use of the product
should, therefore, be based on local and regional epidemiological information
about susceptibility of parasites, and used in association with other pest
management methods.
Care should be taken to avoid the following practices because they increase
the risk of development of resistance and could ultimately result in ineffective
therapy:
- too frequent and repeated use of ectoparasiticides from the same class over
an extended period of time;
- underdosing which may be due to underestimation of bodyweight,
misadministration of the product, or lack of calibration of the dosing device.

Special precautions for use in animals
Do not apply on or near the animal’s eyes and mucous membranes.
The product is for external use only.
Avoid contact with eyes and mucous membranes as deltamethrin is an irritant.
Care should be taken to prevent licking of the product. Avoid use of the product

Revised: August 2025
AN: 01299/2025
during extremely hot weather and ensure animals have adequate access to
water.
The product should only be administered onto undamaged skin as toxicity is
possible due to absorption from major skin lesions. However, signs of local
irritation may occur after treatment as skin may be already affected by
infestation.
Special precautions to be taken by the person administering the veterinary
medicinal products to animals
Deltamethrin can cause hypersensitivity (allergic) reactions. People with known
hypersensitivity to deltamethrin should avoid contact with the product.
Wear protective clothing including waterproof apron and boots and impervious
gloves when either applying the product or handling recently treated animals.
Remove heavily contaminated clothing immediately and wash before re-use.
Wash splashes from skin immediately with soap and plenty of water.
Wash hands and exposed skin after handling this product and before meals.
In case of contact with eyes, rinse immediately with plenty of clean, running
water and seek medical advice.
In case of accidental ingestion, wash out mouth immediately with plenty of
water, seek medical advice and show the package leaflet to the physician.
Do not smoke, drink or eat while handling the product.
This product contains deltamethrin which may produce tingling, itchiness and
blotchy redness on exposed skin. If you feel unwell after working with this
product, seek medical advice immediately and show the package leaflet or the
label to the physician.
Special precautions for the protection of the environment:
Deltamethrin is very toxic to dung, fauna, aquatic organisms and honey bees, is
persistent in soils and may accumulate in sediments. The risk to aquatic
ecosystems and dung fauna can be reduced by avoiding too frequent and
repeated use of deltamethrin (and other synthetic pyrethroids) in cattle and
sheep, e.g. by using only a single treatment per year on the same pasture.
The risk to aquatic ecosystems will be further reduced by preventing treated
sheep from entering watercourses for one hour immediately after treatment.
Other precautions
Not applicable