Crovect Prevention Of Blowfly Sheep Pour On

Crovect Prevention Of Blowfly Sheep Pour On
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800ml Bottle
2.2 litre Bottle
5 litre Bottle

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  • 800ml Bottle £47.38
  • 2.2 litre Bottle £79.99
  • 5 litre Bottle £117.85

Selection of 3 products from

£47.38 to £117.85

Description

For the treatment and control of ticks, headflies and biting lice on sheep. For the prevention and treatment of blowfly strike on sheep. POM-VPS.

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All prices include VAT where applicable.

Medication Datasheets

Reviews (44)

Summary of Reviews for Crovect Prevention Of Blowfly Sheep Pour On

Overall 5
Effectiveness
Ease Of Use
Value For Money
Absence Of Side Effects
44 out of 44 (100%) customers would recommend this product.
5 stars (37 reviews)
4 stars (5 reviews)
3 stars (1 reviews)
2 stars (1 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 First class fast service
Verified Purchase

By on 25 May 2026

Crovect works extremely well on my small flock - never had a problem with it

Customer recommends this product

55 Crovect easy to use
Verified Purchase

By on 6 May 2026

Easy to use convenient

Customer recommends this product

55 Elderly sheep had fly strike!
Verified Purchase

By on 30 August 2025

Horrifying to discover she had fly strike (hot summer, but sheared) quiet n lethargic- this product brought her back to normal- definitely using as a precaution from now on!

Customer recommends this product

55 Quality product and service
Verified Purchase

By on 23 August 2025

Crovect is a proven treatment of fly strike and this was cheaper than the local farmers store

Customer recommends this product

55 Quality product and service
Verified Purchase

By on 23 August 2025

Crovect is a proven treatment of fly strike and this was cheaper than the local farmers store

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding Crovect Prevention Of Blowfly Sheep Pour On, including answers from our team.

10 July 2025 at 1:59pm

Alpacas

Helen

Can you use this on alpacas for fly prevention?

  • VioVet Staff

This is not licensed for Alpacas - I would suggest conculting a vet

9 June 2025 at 2:10pm

Does this come with a gun?

Gemma Davies

  • VioVet customer since 2024
  • From: Cardiff, United Kingdom

Does this come with a gun or which gun is needed?

  • VioVet Staff

No, pour on guns are available to buy separately on our website.

23 May 2023 at 6:57am

Shelf life

Maxine

What is the shelf life of the bottle once opened?

  • VioVet Staff

Shelf life of the 0.8 litre and 2.2 litre veterinary medicinal product as packaged for sale: 18 months. Shelf life of the 5.0 litre veterinary medicinal product as packaged for sale : 2 years. Shelf life after first opening of the immediate packaging: 3 months.

21 April 2023 at 11:57am

Product description

M Baker

Does this product come with the application nozzle or is this a separate purchase.

  • VioVet Staff

This product does not come with the applicator gun included, this can be purchased separately here.

13 May 2022 at 1:56pm

Safe shearing after application

Marguerite Ashman

My unshorn sheep were treated 4 weeks ago. My shearer wants to know when it will be safe for him to shear them so he won't be affected by contact with the previously treated fleece.

  • VioVet Staff

One application will give 6-8 weeks protection, this will then need to be repeated if you wish to continue protection. It is best to shear before treating as the product is stored partly in the fleece itself, shearing after treating can lead to loss of the medication and it's effect. It is therefore advised to shear 6 to 8 weeks after application and then re-apply after shearing.

20 March 2022 at 8:27pm

Will it last on unshorn sheep from application at begining of April until shearing middle off june

MAGGIE HARRIS

length off time for prevention off blowflie hatch on un shorn sheep until shearing in june. More than one application ?

  • VioVet Staff

One application will give 6-8 weeks protection, this will then need to be repeated if you wish to continue protection.
It is best to shear before treating as the product is stored partly in the fleece itself, shearing after treating can lead to loss of the medication and it's effect. If you plan to shear 6 to 8 weeks after application then you will need to reapply anyway so this is fine.

18 October 2021 at 11:40am

CROVECT AND MAGGOTS

bridget F

WILL CROVECT KILL MAGGOTS?

  • VioVet Staff

Yes, the ingredient within (Cypermethrin) will kill both flies and maggots. If your sheep have active blowfly strike though then this will need treating. Just trying to cover an existing strike with a spray like this will likely not penetrate deep down into the strike lesion. Clipping and cleaning are often required.
The spray works well to coat the area and prevent future strike from occuring.

28 June 2021 at 8:36pm

Sheared ewes

Pippa Dalton

  • VioVet customer since 2016
  • From: Cambridgeshire, United Kingdom

Hi folks, just purchased some 'Crovect'.
My sheep were sheared on Friday 25th June.
They obviously have very little fleece right now.
Does the fleece need to be a certain minimum length before application of this product.
Using it for treatment & prevention of flystrike.

  • VioVet Staff

Yes you can treat recently shorn sheep. It is best to shear before treating as the product is stored partly in the fleece itself, shearing after treating can lead to loss of the medication and it's effect.

28 June 2021 at 4:43pm

Does convect kill fly eggs

jeanmurray

Does convect kill fly eggs

  • VioVet Staff

Crovect will not kill fly eggs but it will kill adult flies and larvae, which effectively stops the fly life cycle and so prevents against fly strike. Any flies that emerge from eggs will be killed whilst the product is active.

19 August 2020 at 7:55am

Brushing

Eastham

My daughter has 2 pet ryeland sheep how long after use can they be brushed Again

  • VioVet Staff

The product is stored in the lanolin of the fleece, but once absorbed it cannot be brushed out. Therefore I would advise waiting up to 48 hours to ensure the product is completely dry before brushing.

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