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  • Effipro DUO Spot On Flea Treatment For Large Dogs 20 - 40kg - 4 Pack

Effipro DUO Spot On Flea Treatment For Large Dogs 20 - 40kg - 4 Pack By Effipro

Effipro Duo Spot On Flea Treatment For Dogs contains two active ingredients which help to protect your pet from fleas and ticks. It will also help prevent fleas from infesting your home and then re-infesting your pet. It provides optimal protection against fleas and ticks for dogs.

Provides 3 month of protection against the flea life cycle completion.

Virbacs' innovative drop lock pipette makes application easy and more controlled.

Broadens coverage to target key developmental steps within the flea life cycle

Kills adult fleas and ticks without the need for a blood meal

Provides 3 months of protection against flea life cycle completion

Sterilises adult fleas and inhibits immature stages, which breaks the flea life cycle and helps prevent re-infestation

Unique Drop-Lock pipette:

Easy to snap open - Effipro Duo is sealed away until your client is ready

Easy to apply - a gentle squeeze is all that’s needed

Easy to control - Drop-Lock technology stops drips and spills

Easy to see - clear chamber shows when a full dose is applied

NFA-VPS - ideal for over the counter sales

Approved for use in dogs >2kg and over 10 weeks of age

Approved for use in cats >1kg and over 10 weeks of age

Ratings & Reviews

10 reviews

  • 3 stars
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  • 1 star
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30/9/2025 3:08:00 PM

Will keep buying

by Daniel Green -

This is my go to flea treatment for my large dog The 4 pack is convenient and reliable

13/5/2025 6:01:00 PM

Highly satisfactory

by Chloe Finch -

Keeps him protected year round from the threat of fleas and ticks The duo action for eggs is a bonus

8/8/2025 6:32:00 PM

Essential for big dogs

by Ben Ellis -

It's good to have a product specifically dosed for a large dog It gives me confidence in the level of protection

12/9/2025 11:04:00 AM

No irritation

by Amelia Drew -

Great for his sensitive skin No redness or scratching at the application site which is excellent news

13/10/2025 7:57:00 AM

Took a few days to work

by Zack Cole -

It wasn't instant but after about three days the scratching stopped and the fleas were gone Still very good protection

28/5/2025 11:49:00 AM

Trusted brand

by Yara Benson -

I rely on Effipro Duo for comprehensive flea and tick control It works consistently and I've had no issues

6/7/2025 5:54:00 PM

Easy application

by Xander Ames -

Despite his thick coat the pipette is designed well enough to get the liquid directly onto his skin where it needs to be

29/5/2025 12:54:00 PM

Good value 4 pack

by Willow Zane -

Buying the multipack is the most sensible way to ensure continuous protection for my big dog Very economical

22/5/2025 10:47:00 PM

Highly effective

by Victor Young -

Cleared up a persistent flea issue we were having very quickly I will now use it for monthly prevention

7/10/2025 8:27:00 AM

Great large dog dose

by Una West -

The dosage is perfect for my large Labrador at 35kg I trust this product to keep him protected from parasites