Reoccurring fleas in Dogs - why they keep coming back (and what actually works)
- Chloe Thomas
- 6 hours ago
- 3 min read
If your dog keeps getting fleas… it’s not because the treatment isn’t working.
It’s because something underneath hasn’t changed.
And until that shifts…
you’ll keep finding yourself back in the same place.
Treat → clear → return
Treat → clear → return
And it can feel like you’re constantly chasing it.
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🌿 It’s not just about the fleas
Some dogs seem to get fleas again and again…
while others barely get touched.
That’s not luck.
That’s susceptibility.
When a dog’s system is a little out of balance,
it becomes much easier for parasites to take hold.
Almost like the body becomes… an easy target.
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🌿 A gentle truth about spot-on treatments
Most people reach for a flea treatment straight away.
And I completely understand why.
But it’s worth knowing what’s actually happening when you do.
Spot-on treatments don’t just “kill fleas”.
They work by making your dog’s skin toxic to insects.
And those chemicals don’t just stay in one place.
They spread across the skin…
and are then shed into the environment for weeks and even months.
Which means:
they sit on your dog’s coat
transfer onto your hands
onto your sofa, your bedding
onto children when they cuddle them
And when your dog swims…
those chemicals go straight into rivers and waterways.
They’ve actually found residues of flea treatment chemicals in river water across the UK —
affecting fish, aquatic life, and the wider ecosystem.
So this isn’t just about your dog.
It’s about everything around them too.
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🌿 And from a health perspective…
When we repeatedly suppress something externally…
without supporting what’s going on internally…
we often end up in a cycle.
Something is pushed down…
and then reappears again later.
And over time, the body becomes more dependent on intervention
rather than learning to regulate itself.
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🌿 Why fleas and worms often come together
This is something I see all the time.
If a dog has fleas…
there’s often a good chance worms are present too.
They tend to go hand in hand.
Because again — it comes back to susceptibility.
When the body is under strain…
parasites see it as a bit of a playground.
An easy environment to live in.
So we’re not just thinking about fleas…
we’re looking at the whole picture.
🌿 Click here for more infomation a natural worming
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🌿 What actually changes things
This is where we step out of the cycle.
Instead of constantly reacting…
we start supporting the dog underneath it all.
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🌿 Constitution — the piece that changes everything
Every dog has a constitutional picture.
The way they:
respond to stress
process things physically
react through their skin, gut, and behaviour
And when you find the remedy that matches that…
something shifts.
The body becomes:
more resilient
less reactive
less attractive to parasites
Not because we’ve killed the fleas directly…
but because the system is no longer an easy target.
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If you’re not sure how to spot your dog’s constitution,
start here:
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🌿 Diet plays a bigger role than most people realise
What your dog is eating directly affects:
gut health
skin health
immune balance
overall resilience
And when that’s supported properly…
everything else becomes easier to manage.
🌿 I explain more about there here in my raw feeding blog.
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🌿 Bringing it all together
When you:
understand your dog’s constitution
support their system internally
and look at the bigger picture
You stop chasing fleas…
and start changing the pattern.
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🌿 If you’re stuck in the cycle
If you feel like:
fleas keep returning
treatments only work temporarily
you’re not sure what your dog actually needs
This is exactly what I help with.
In a short animal coaching session,
we look at your dog as a whole…
and gently work out:
their constitutional picture
why they’re susceptible
and what will support them properly long-term
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