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Clinical particulars
Target Species
Cattle and Sheep
Indications for use, specifying the target species
For the treatment and prevention of infestations by lice and flies on cattle; ticks, lice, keds and established blowfly strike on sheep and lice and ticks on lambs.
On cattle: For the treatment and prevention of infestations by both sucking and biting lice, including Bovicola bovis, Solenopotes capillatus, Linognathus vituli and Haematopinus eurysternus in beef and dairy cattle. Also as an aid in the treatment and prevention of infestations of both biting and nuisance flies including Haematobia irritans, Stomoxys calcitrans, Musca species and Hydrotaea irritans.
On sheep: For the treatment and prevention of infestations by ticks Ixodes ricinus and by lice (Linognathus ovillus, Bovicola ovis), keds (Melophagus ovinus) and established blowfly strike (usually Lucilia spp).
On lambs: For the treatment and prevention of infestations by ticks Ixodes ricinus and by lice Bovicola ovis.
Do not use on convalescent or sick animals.
Do not use in cases of hypersensitivity to the active substance or to any of the excipients.
Extra-label use of the product in the non-target species dogs and cats can lead to toxic neurological signs (ataxia, convulsions, tremors), digestive signs (hypersalivation, vomiting) and may be fatal.
Special warning for each target species
To avoid resistance, the product should only be used if the susceptibility of the local fly population to the active substance is assured.
Cases of resistance to deltamethrin have been reported in stinging and nuisance flies in cattle and lice in sheep.
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.
If clinical signs do not resolve following treatment, the diagnosis should be revised.
Special precautions for use
Special precautions for use in animals
The product is for external use only.
Do not apply on or near the animal’s eyes and mucous membranes.
Care should be taken to prevent licking of the product. Avoid use of the product 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 product to the animal
Persons with known hypersensitivity to the product or one of its components should avoid contact with the veterinary medicinal 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 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 and seek medical advice.
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, consult your doctor and show this label.
To the physician:
Advice on clinical management is available from the National Poisons Information Service.
Other Precautions
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 a single treatment per year on the same pasture.
The risk to aquatic ecosystems will be further reduced by keeping treated cattle away from water bodies for four weeks after treatment.
Adverse Reactions (frequency and seriousness)
Squamosis and pruritus have been very rarely seen in cattle during the 48 hours after treatment.
The frequency of adverse reactions is defined using the following convention:
very rare (less than 1 animal in 10,000 animals treated, including isolated reports)
Use during pregnancy, lactation or lay
The safety of the veterinary medicinal product has not been established during pregnancy and lactation.
Laboratory studies in rats and rabbits have not produced any evidence of teratogenic or embryotoxic effects.
Use only according to a benefit/risk assessment by the responsible veterinarian.
Interaction with other medicinal products and other forms of interaction:
Do not use with any other insecticide or acaricide. The toxicity of deltamethrin is enhanced in combination with organophosphorous compounds, in particular.
Amounts to be administered and administration route
For external use.
Spot-on application
Cattle: 100 mg of deltamethrin per animal corresponding to 10 ml of product.
Sheep: 50 mg of deltamethrin per animal corresponding to 5 ml of product.
Lambs (under 10 kg bodyweight or 1 month of age): 25 mg of deltamethrin per animal corresponding to 2.5 ml of product.
Apply a single dose with the special 'Squeeze 'n' Pour' dispenser pack or the Spot-On Applicator in one spot on the mid-line of the back at the shoulders. For blowfly strike on sheep, see following specific indication directions.
Lice on cattle: One application will generally eradicate all lice. Complete clearance of all lice may take 4 - 5 weeks during which time lice hatch from the eggs and are killed. A very few lice may survive on a small minority of animals.
Flies on cattle: For the treatment and prevention of infestations by biting and non-biting flies. Where horn-flies predominate, treatment and prevention of infestations can be expected for 4 - 8 weeks. Treatment for flies should not be repeated within four weeks.
Ticks on sheep: Application to the mid-point of the shoulders will provide useful treatment and prevention of infestations by ticks attaching to animals of all ages, for up to 6 weeks after treatment.
Keds and lice on sheep: Application to the mid-point of the shoulders of sheep in short or long fleece will reduce the incidence of a biting louse or ked infestation over a 4 - 6 week period after treatment.
It is advisable to:
treat shortly after shearing (animals with short fleece),
keep treated sheep separated from untreated sheep to avoid re-infestation.
N.B. For treatment and prevention of infestations by ticks, keds and lice on sheep, the fleece should be parted and the Spot-On applied to the skin of the animal.
Established blowfly strike on sheep: Apply directly to the maggot infected area as soon as the fly strike is seen. One application will ensure blowfly larvae are killed in a short time. In the case of more advanced strike lesions, clipping out of stained wool before treatment is advisable.
Lice and ticks on lambs: Application to the mid-point of the shoulders will provide useful treatment and prevention of infestations by ticks for up to 6 weeks after treatment, and will reduce the incidence of biting lice over a 4-6 week period after treatment.
Overdose (symptoms, emergency procedure, antidotes), if necessary
Some adverse effects have been seen following overdose. These include paraesthesia and irritation in cattle, as well as intermittent or attempted urination in young lambs. These have been shown to be mild, transient and resolve without treatment.
Withdrawal periods
Cattle: Meat and offal: 17 days Milk: zero hours
Sheep: Meat and offal: 35 days Milk: Not authorised for use in ewes producing milk for human consumption.