# FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes

FRONTLINE Spot On is a liquid flea and tick treatment supplied as three pipettes for large dogs weighing 20–40 kg. The listing claims fleas are killed within 24 hours and ticks within 48 hours, with monthly application intended to cover three months.

- [Original product page](https://bargainpostbox.co.uk/product/frontline-spot-on-flea-tick-treatment-large-dogs)
- [View offer](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: FRONTLINE
- Model: 2042219124
- Category: Pet Supplies > Pet Grooming & Health > Pet Health
- Price: 15.39 GBP
- Previous price: 30.49 GBP
- Discount: 50%
- Price checked: 2026-11-12T19:16:09.310Z
- Rating: 4.4 / 5
- Reviews: 35215

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- For dogs in the 20–40 kg weight band, as stated in the title.
- The listing claims fleas are killed within 24 hours and ticks within 48 hours after they latch onto a treated dog.
- Apply one pipette to the skin at the back of the neck, according to the listing.
- Monthly treatment is claimed, with three pipettes described as three months of protection.

## Pros

- Three individual pipettes suit a monthly schedule spanning three applications.
- Liquid spot-on administration avoids giving a chew or tablet.

## Specifications

### Identity
- Brand: FRONTLINE
- Model: 2042219124
- Target animal: Dog
- Dog size: Large
### Product details
- Form: Liquid
- Scent: Fragrance free
- Colour: Clear
- Listed weight: 0.01 Pounds
- Listed volume: 8.04 Fluid Ounces
- Age range description: Puppy
- Country of origin: France

## Before you buy

- The listing says the product is for large dogs weighing 20–40 kg, while its age-range field says “Puppy”. Confirm the dog's suitability and follow the product label before use. The listed item volume of 8.04 Fluid Ounces also appears inconsistent with a three-pipette pack, so verify the pack details.

## A good fit for

- Dog owners seeking a three-application spot-on flea and tick treatment for a dog within the stated 20–40 kg range.
- Owners who prefer applying liquid to the skin rather than administering an oral treatment.

## Less suited to

- Dogs outside the stated 20–40 kg range, unless the product label specifically confirms suitability.

## Customer feedback

Customer feedback praises ease of administration, but reports on effectiveness, flea reduction and value are mixed. Some customers say the treatment did not work, and feedback differs on side effects, including reports of rashes. For buyers considering this monthly liquid treatment, these differing experiences matter alongside the listing's claimed kill times and application instructions. The aggregate ratings lean positive overall, but they do not resolve the reported variation in results or reactions.
- Positive themes: Customers praise how easy the treatment is to administer.
- Mixed feedback: Customers report mixed results for effectiveness, flea reduction and value.
- Mixed feedback: Feedback differs on side effects, with some reporting no ill effects and others mentioning rashes.

## Frequently asked questions

### How many pipettes are included?
The title and listing describe three pipettes, intended for three monthly applications.
### What dog weight range is stated?
The title specifies large dogs weighing 20–40 kg.
### How is the treatment applied?
The listing says to empty one pipette onto the skin at the back of the dog's neck.
### How quickly are fleas and ticks claimed to be killed?
The listing claims fleas are killed within 24 hours and ticks within 48 hours after latching onto a treated dog.

## Alternative options

- [FRONTPRO Chewable Tablets Flea & Tick Treatment for Dogs 3 Pack \(25-50kg\)](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Itch Large Dog \(20-40kg\) Flea & Tick Spot On Treatment - 3 Pipettes \| Kills Fleas, Ticks, Lice & Eggs to Prevent Reinfestation](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Advantage Chewable Flea & Tick Tablets, 1 Pack, Dogs 5.5-11kg, 225mg \| Dog flea and tick treatment chew, Kills fleas in 4 hours ticks in 8, Easy to give, Monthly protection, Meat flavoured](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Frontline Plus For Dogs 10-20kg - 1 Pipette, Flea And Tick Treatment For Dogs, Frontline Flea Treatment For Dogs, Frontline Spot On For Dogs, Frontline For Dogs](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Advantage Chewable Flea & Tick Tablets, 3 Pack, Dogs 11-22kg, 450mg \| Dog flea and tick treatment chew, Kills fleas in 4 hours ticks in 8, Easy to give, Monthly protection, Meat flavoured](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Dog Flea Treatment Extra Large Dogs x 2 - Flea Treatment for Dogs XL Very Large Dog 40-60 kg - Spot-On Solution for Fleas and Tick Control - FleaSolve 2 x Pipettes, 2 x Doses](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Advantage Chewable Flea & Tick Tablets, 2 Pack, Dogs 5.5-11kg, 225mg \| Dog flea and tick treatment chew, Kills fleas in 4 hours ticks in 8, Easy to give, Monthly protection, Meat flavoured](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Itch X Large Dog \(40kg+\) Flea & Tick Spot On Treatment - 3 Pipettes \| Kills Fleas, Ticks, Lice & Eggs to Prevent Reinfestation](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Advantage Chewable Flea & Tick Tablets, 1 Pack, Dogs 11-22kg, 450mg \| Dog flea and tick treatment chew, Kills fleas in 4 hours ticks in 8, Easy to give, Monthly protection, Meat flavoured](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Zesty Paws Pre, Post & Probiotic for Dogs, Daily Digestive Bites - 90 Chews \| Vet Formulated Prebiotics & Fibre Supplements for Dog Gut Health, Digestion, Stool Firmness & Stomach Settling](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [Advantage Chewable Flea & Tick Tablets, 1 Pack, Dogs 22-45kg, 900mg \| Dog flea and tick treatment chew, Kills fleas in 4 hours ticks in 8, Easy to give, Monthly protection, Meat flavoured](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)

## Add-ons

- [Dog Flea Treatment Large Dog x 6 - Spot on Flea Treatment for Dogs Large 20-40 kg - FleaSolve 6 Pipettes, 6 Doses - Effective](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)
- [REPELEM Flea Spray for The Home - Household Killer, Kills Eggs & Larvae 1L \| Professional Strength Formula, Household & Carpe](https://bargainpostbox.co.uk/visit/frontline-spot-on-flea-tick-treatment-large-dogs)

## Images

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 1](https://bargainpostbox.co.uk/i/OW_I70LaJc50Iu_xVq-A96BTO9bJVlLG8cHPClQfSfgFKWgXVZEOovBX6Ho0b6uHjAjqQzlGyUo5H_jiQXWCdjYpo8ofPI2rVj8xzsj3pS-7bDpIv86f9ogS.jpg)

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 2](https://bargainpostbox.co.uk/i/O_0Sg66zAFJFAUQuX89XtcyX4e6e9o6M1JnV7bA0EvyoHM9KVgsJaeDm2MRsiJxfo5GtXZM8s4vbhblevbM8aMIBHFEnTeD_p6PdqxmMLQkCWcdTDGzSwAEY.jpg)

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 3](https://bargainpostbox.co.uk/i/ID5Zqiwi0QlBG2sjKpILwdmwVRvY8yArgeellQCs7XqEUMCd3UOTZQiwmhRTvrBnHmkPCLaBU2p7JL_X7t0rM4g6T1Udw_y7TMKQz-JFd-SA2APr6i-6DxaO.jpg)

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 4](https://bargainpostbox.co.uk/i/OLbdeDIRiWgIbG707Huf5kxkIwoMgqBVp7FlAZCHmcLmSktHEblRT2Wtrzve0w1rvRAboE-sAU7eLbjwb6oq7SEECuWfM6mSfsWbS2XfKvSzaUq5FVkLKWte.jpg)

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 5](https://bargainpostbox.co.uk/i/FGhLii6r1czFJBBvZHEYCAey963t4dQ2FC2xjnnQVHd8uqzLTeRfO0xCYJOuvThAKXNhhfLsKb22AijsUJl3OTIVEO-WmBIxN4bb8Zabo4CvvPTNHIo9Hkbi.jpg)

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 6](https://bargainpostbox.co.uk/i/GeC6EZE1EmJUoJbP5XVBfyM3Ou4J7SiazoNKPSrjCQhDJziajPeej_239kzSoF5wXGAduP6LsqA3yLNSIftK3JDwjDLDDCpdPOT8JgI2jd9OSQeUMKjiN6gW.jpg)

![FRONTLINE Spot On Flea & Tick Treatment for Large Dogs, 20–40 kg, 3 Pipettes — 7](https://bargainpostbox.co.uk/i/1lqBze1D360N1TvRY9FjyW9m_T1Mfjg4XZyDUTHFBEFWrnvD4JCFVJtiof95IIj45DP1X1LYc244Ws_YqH0O3CXanafM7Gu33C7chK_D5xJkdqqwAZ4OcDxw.jpg)