Best flea & tick prevention for farm dogs

A farm dog picking up fleas and ticks every single day is a genuinely high-risk situation — standard supermarket products often won't cut it at that exposure level. The most effective prevention depends on your dog's size and weight, the local tick pressure, and whether you'd rather use a spot-on, collar, or oral treatment. Some widely sold products are significantly less effective than others, so it's worth getting this right. What breed and size is your dog, are you in a high-tick-risk area, and do you have a preference for how you treat?

At that exposure level — daily contact with long grass and livestock — you need a prescription-strength isoxazoline treatment, not a spot-on or supermarket collar. For a 7kg Jack Russell in a genuinely high-risk environment, I'd recommend NexGard (afoxolaner) chewable tablets. It's a monthly oral treatment that kills fleas and ticks systemically, so there's no residue to wash off, no collar to snag on fencing, and it doesn't lose effectiveness if she gets wet or muddy. It covers the main tick species you'll encounter on UK farmland, including Ixodes ricinus which carries Lyme disease. One thing to confirm: is she up to date with vet checks? NexGard is prescription-only in the UK, so you'll need it via your vet or a licensed online vet pharmacy — but that's straightforward and worth doing properly for a dog at her risk level.

For farm work specifically, yes — NexGard has the edge over Seresto in a few practical ways. Seresto is a solid collar and works well for moderate exposure, but on a working farm the collar can catch on gates, fencing, or equipment, and if it gets consistently caked in mud the active ingredient release can be affected. An oral treatment removes all of that. NexGard also kills ticks faster after attachment — within hours — which matters when your dog is accumulating tick exposures all day. Seresto is an 8-month collar that's genuinely convenient for lower-risk dogs, but for daily high-load exposure I'd back the oral route every time.

NexGard handles fleas and ticks well, but there are two things worth adding. First, do a quick tick check each evening — run your fingers through her coat, especially around the head, neck, ears, and between the toes. Even with NexGard, a tick that's just attached and gets removed manually before it feeds fully is better than one that stays on for hours. Second, if you're not already, make sure she's covered for lungworm — NexGard doesn't include that. Advocate spot-on covers lungworm and can be used alongside NexGard without issue. Worth a quick conversation with your vet when you pick up the NexGard prescription.

Good plan. Monthly, consistent dosing is the key — try not to let it lapse even by a few days given her exposure. And if you ever notice any unusual scratching or lethargy in the days after a tick-heavy session, it's worth mentioning to your vet. She's in a high-risk job but NexGard should give her solid protection.