Best flea treatment for Shelties under £8

A 7-year-old Sheltie on a student budget — that's a very specific brief and I can work with it. The most effective flea prevention depends on your dog's weight, whether ticks are a real concern where you are, and whether you want a spot-on, collar, or oral treatment. Some widely sold budget options are noticeably weaker than others, so it's worth being precise. Quick questions: how much does your Sheltie weigh, are you somewhere with a high tick risk (woodland walks, long grass regularly), and are you set on keeping it under £8 per treatment?

That's really helpful. At 9kg she sits in the medium Sheltie range, which means she takes the standard 10–20kg spot-on dose. Edinburgh parks carry some tick risk but it's not the Scottish Highlands, so flea prevention is the main priority here. One thing worth knowing with Shelties specifically: they carry the MDR1 gene mutation at a high rate, which makes certain oral treatments — particularly those containing milbemycin or spinosad — potentially problematic. Spot-on is the safer route for the breed. Before I give you my recommendation, does she have any skin sensitivities or has she reacted to spot-ons before?

No judgement — it happens. Right, here's my recommendation: Frontline Spot On for Medium Dogs (10–20kg). A pack of three pipettes comes in consistently under £8 on Amazon UK, often around £6–7. It uses fipronil, which kills adult fleas and disrupts the life cycle, and it's been proven safe for MDR1-sensitive breeds like Shelties. It won't cover ticks as thoroughly as Frontline Plus or a prescription product, but for an Edinburgh dog whose main exposure is city parks, it's more than adequate. Apply one pipette to the back of the neck once a month, keep it going consistently and you'll stay on top of it. That's your best value option that doesn't compromise on safety for the breed.

Yes — with a double-coated dog like a Sheltie the biggest mistake is applying it to the fur rather than the skin. Part the coat right at the base of the skull, between the shoulder blades, and squeeze the pipette directly onto the skin. You want skin contact, not fur contact. Let it dry for 24 hours before bathing her or letting her out in rain. Some dogs get a slight greasy patch at the site for a day or two — that's normal. Also, don't stroke that spot while it's drying, and keep her away from other pets in the house during that window.

Good luck with it. Frontline Spot On for medium dogs, once a month, applied to the skin — she'll be well covered. If you ever move somewhere with heavier tick exposure, come back and we can look at stepping up to something with tick activity included.