How to switch to natural dog worming products

32 CommentsMonday, 22 October 2018  |  Kate

How to Make the Switch

At My Itchy Dog we are often asked "How can I deworm my dog naturally?" Well, the best way to switch over to natural worming products, for dogs or cats, is to overlap your last pharmaceutical wormer and flea treatment with your new natural routine. This is because natural parasite control (Four Seasons or Verm-X for worms, and Billy No Mates dry or tincture for flea, tick and mite repellent) takes from four to six weeks to become effective. This makes it crucial to treat your dog or cat for worms and fleas using a conventional method prescribed by your vet while you make the transition. 

The overlap eradicates any parasites already present that may have already left the gut, eg. lungworm. If you don’t use veterinary wormers and flea treatments we strongly suggest you do a worm egg count when you start, especially for lungworm (see below).

The 4-6 week overlap will give the and Verm-X or Four Seasons time to become effective. Once they're off the vet's medication your dog or can take natural parasite control for as long as you want.

Before you start – do a worm egg count

It’s important you’re working from a clean slate, so to speak, and that your dog or cat’s gut is as free from worms as possible. If there are round, tape, hook or whip worms present you need to up the amount of natural wormer you use to start with. See product pages for full instructions. If there is lungworm present that can ONLY be treated by your vet. Once your dog is clear from lungworm they can then go on to a natural wormer.

So do a worm egg count: a simple test of your dog’s faeces you collect with one of our kits and send FREEPOST to the lab. Results, with any suggestions for necessary treatment are sent to you via email.

There is nothing to stop you cracking on with your natural worming schedule for your dog while you wait.

Verm-X (crunchies, liquid or pellets) and Four Seasons works to create an environment within your dog's gut that is unattractive to parasites. They are specially formulated to gently usher these intruders out the back door (so to speak). Verm-X and Four Seasons target parasites when they enter through the mouth and eliminates them before they can migrate to other parts of the body. They’re both gentle on the gut too, so ideal for dogs with delicate tummies

Four Seasons is great for multiple pet households. Use it on dogs, cats, rabbits etc. Plus it’s really cost effective.

Billy No Mates is a herbal supplement that is formulated to repel all external parasites including fleas, ticks and mites; especially useful as a preventative against parasites that may be carrying worm eggs. It is used best used continuously throughout the year with only a short break from using it in very cold weather. Simply start up again in warmer weather. Again, it’s a gentle product, well tolerated by dogs and results in your dog getting a shiny, sleek coat as a side benefit.

Billy No Mates is a neem based flea repellent and comes as either a dry herbal mix or a liquid tincture, made of the same ingredients then steeped and bottled. Cats tolerate the tincture better and it works well when added to wet food.

How dogs and cats get worms.

In order to know how natural worming products work it’s important to understand how worms themselves operate. There are various types that infest dogs and cats, and they can pass them between each other. Which is nice!

All puppies and kittens will inherit worms from their mother too, making it vital to worm them with a veterinary wormer until they are at least three months old. After that they can slowly migrate over to natural worming and flea treatment.

Our pets pick worms up from other infected animals, eating the larvae or the eggs of worms, transferred from mother to infant during pregnancy, eating raw meat or dead animals you come across on a walk that have worms, or from infected parasites (immature fleas can carry tapeworm.)

The most common worms in the UK are:

• Roundworm
• Tapeworm
• Whipworm
• Hookworm
• Lungworm (is less prevalent but on the increase and can be fatal if left untreated.)

They all live in the gut and enter via the mouth. Eggs then pass out through faeces and the whole process starts over.

With the exception of lungworm, which migrates from the gut into the bloodstream to sit next to the heart. It then releases thousands of eggs that penetrate the lungs and move up, to be coughed out.

Lungworm can be fatal which is why it’s key to make sure your dog is covered and why we always recommend you overlap with a veterinary worming treatment, and get a lungworm egg and a lungworm egg count done before you start moving over to herbal worming.

Susan Redshaw
Monday, 10 February 2014  |  10:48

My dogs don't like Billy No Mates, especially my Lab bitch who can't believe that I have ruined her food for her! I haven't tried Verm-X. I expect she'd be equally aggrieved If I poured that on her food. Any suggestions? Sue

Monday, 10 February 2014  |  14:10

Hi Sue

I think you will be fine with the VermX treats and stay away from the liquid.

As for external parasites you can use the Skinny shampoo and spray. Wash the dog once then spray before a walk at the base of the tail and neck with the spray. Job done and no BNM on their food.

Hope that helps

Tuesday, 11 February 2014  |  18:28

I would like to start my dog on Billy No Mates and Verm-x. She last had Advocate on 27 January and Milbemax on 19 January (she has this every three months for tapeworm). Should I wait to start the Billy No Mates and the Verm-x until she has her next dose of Advocate at the end of Februrary? Thank you for your help!

Monday, 24 March 2014  |  11:49

Hi Tara

You need to overlap the two so start as you give the last lot of Advocate.


Rebecca Mann
Thursday, 5 June 2014  |  18:53

what good does Verm X do please?

Sunday, 10 August 2014  |  17:28

I wormed my jack Russell two weeks ago but his symptoms are back.

Is there a natural product that's safe to give him please?

Friday, 15 August 2014  |  10:29

Hi Henry

You can give him VermX or Four Seasons. If you think he has worms I would also recommend a vet check as that's very fast to see symptoms again. Also you can try a worm egg count at

Sia Rad
Friday, 8 May 2015  |  12:16

Interested to know about this as my dog is suffering.

Pauline Townsend
Tuesday, 30 September 2014  |  19:04

I have recently adopted a rescue dog, who is due to be wormed and flea treated, I would like to use this an alternative treatment,
When do you suggest I can start to use it.
Would appreciate and further advice

Wednesday, 1 October 2014  |  11:03

Hi Pauline

Make sure your rescue dog is treated conventionally for fleas and worms and checked by your vet. When you get the all clear just start using it straight away. Then, when the current flea and worm treatment is finished you have cover from the Billy No Mates and Verm-X or Four Seasons.

Tuesday, 21 April 2015  |  14:30

My dog does not like any of the prescribed wormers and its quite traumatising to get her to take any. so it's been awhile since she's been wormed, can I not just start her straight onto the natural wormers?


Jill Sutcliffe
Tuesday, 14 February 2017  |  18:50

Hi, I currently use Billy No Mates, VermX and DE for my three year old dog. Our new pup is 10 weeks and is having two weekly chemical wormers at present. When can I swap her to a more natural regime and is the DE required as well as BNM and VermX?

Wednesday, 26 July 2017  |  14:43

Hi Jill

Your dog can have Four Seasons wormer so can the pup. Give 1ml per month to her and .5ml for the pup until three months.

Or Verm-X from three months at half a dose then a full dose from six months.

Billy can be given from three months.

Csilla James
Sunday, 19 March 2017  |  22:15

Hello there,
Can you please advice me about Four Seasons Anti-Parasitic Tincture for Dogs & Cats. Our dog is expecting a litter soon. I would like to use natural anti parasitic product for her and her puppies.How can I use this product for a lactating bitch and for her 2 , 4, 8 weeks old puppies ?

Wednesday, 26 July 2017  |  14:41

Hi Csilla

You can give Four Seasons to bitches in whelp at 1ml per month and puppies at .5ml per month until they're 3 months old.

Yolanda Veloso
Friday, 24 November 2017  |  21:18

Can you give dogs the four seasons tincture once a month and still give them the worm x treats or can the 2 not be mixed? Thanks!

Monday, 27 November 2017  |  9:45

Hi Yolanda

You don't need both. Use either the My Itchy Dog Four Seasons or the Verm-X Treats.


Sandra Appleton
Tuesday, 23 January 2018  |  18:18

Dear Kate
My 14 1/2 yr old cavalier has been doing really well. Gave him milbemax on Saturday and he has had awful diarrhoea. He was diagnosed with colitis when he was young but not bothered him much.
Used to give him billy no mates but he has been v picky with food. What would you suggest as an alternative to both.
Many thanks

Tuesday, 6 February 2018  |  11:26

Hi Sandra

Sorry to hear about the Milbamax incident. You can give either Verm-X treats daily for worms, or Four Seasons 1ml per month for worms. For fleas you could try Skinny Spray and/or Skinny Shampoo. You can get them all from My Itchy Dog.

It's true that older dogs can get more flea outbreaks as their immune system weakens but a spritz of spray would probably do the trick.


Clair Ramsdale
Thursday, 1 February 2018  |  21:35


Does the Four Seasons work against heart worm?

E Rowlinson
Thursday, 5 July 2018  |  8:29

What flea and wormer do you recommend for my dog who is epileptic and cannot have conventional treatments?

Thursday, 5 July 2018  |  8:58


We recommend Billy No Mates and Four Seasons from for fleas and worms.


Sunday, 29 July 2018  |  18:42

Can I ask if these natural treatments need to be given every day or do you give for so long then have a break ?

Monday, 6 August 2018  |  11:34

Hi Amy

The Four Seasons and Verm-X wormers are given continuously. Four Seasons once a month, Verm-X depending on if you give the treats, pellets or liquids.

The Billy you need to have a break during the cold spell in winter but that's about it.


Thursday, 9 August 2018  |  17:06

I have misplaced dosage instructions for Billy No Mates for my Saint Bernard who is 74 kgs. Also, can I just confirm that Verm X would treat all worms including Lungworm please?

Tuesday, 14 August 2018  |  11:57

Hi Wakelin

For a large dog it's 2 scoops per day of the dry Billy No Mates flea mix. Or 8ml for the tincture.

Verm-X will work on anything coming in to the gut via the mouth. So if you've been on Verm-X when the lungworm eggs came into the gut you should be covered. Once the lungworm eggs have left the gut and gone in to the blood Verm-X can't help with that. So if you were covered with the VX before you're fine but if you're in any doubt do a conventional veterinary treatment for lungworm, and do a worm egg count which you can get from us at My Itchy Dog.

Saturday, 27 October 2018  |  22:55

Hi interested in switching my dog to natural prevention. What about heart worm? I don't see that mentioned in the list .

Monday, 29 October 2018  |  9:00

Hi Emma

Where are you based? Lungworm in the UK is also known as French heart worm. This protects against it as long as you follow the overlap guidelines as listed above.

Heart worm in the US and Gulf states is transmitted through mosquito bites so you need a veterinary treatment for that.

This type of heart worm isn't found that often in the UK but again start with the overlap.

John Riley-Holmes
Friday, 19 April 2019  |  10:58

I have a 8 moth old cocker spanial and I am thinking of changing her to herbal flee and worm treatment. I an very sceptical about alternative treatments but after reading the dangers of the normal treatments and the fact that my last 4 gods passed away with cancer, and reading that these tratments increase your dogs risk of cancer by 50%, I am now considering using these products. What would be your advice my dogs nest flee treatment id on the 26/04/19 and wormer in about two months.

Tuesday, 23 April 2019  |  11:38

Hi John

For Natural flea treatment it's Billy No Mates and for natural worming I suggest Four Seasons.

We recommend an overlap for both products. You can start on Billy No Mates right away, but it can take up to 6 weeks to get to full strength in the system so I would recommend giving your dog her last chemical flea treatment on the 26th, to ensure she's fully covered while Billy takes effect. The Four Seasons can be taken at the same time as your last chemical wormer and then once a month from then on. For full dosage instructions please see our product pages:


Tuesday, 6 August 2019  |  10:54

My 9 year old cavalier has milbemax every 3 months but it gives her a sore tummy and she has pancreatitis regularly. Would not tolerate Billy no mates as smell put her off. Would verm x be suitable for her ?

Lindsay Mary Jordy
Thursday, 15 August 2019  |  11:27

My bitch has just had Bravecto and monthly Millbemax and has had an adverse reaction which has been reported so I want to go completely natural. When can I start, bearing in mind the Bravecto lasts for 3 months and what do you recommend? Also for lungworm? Lindsay