Prevent resistance – perform worm testing before deworming

Welcome to Worm&Co 

Only deworm when truly necessary

Worm&Co is the leading company specialized in worm analysis for animals. With us, your animal’s health always comes first. That is why all examinations are carried out by specialists from the veterinary parasitology laboratory. Our knowledgeable and enthusiastic team is happy to guide you towards optimal worm management. Because your animal’s health always deserves the very best.

Easily order the worm analysis kit online. If a worm infection is detected, we will immediately provide appropriate advice and a customized treatment plan.

Many animal owners already rely on our experienced team
Among our clients: Anky van Grunsven, Rien van der Schaft, Stoeterij Sterrehof, Hester Klompmaker, and Stal van Silfhout. You can find more client experiences at the bottom of this page. Any questions? Feel free to contact us — our team is happy to help.

Conclusion: only deworm when worm testing shows it is truly necessary.

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Satisfied Clients

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Dedicated Team

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Reviews ⭐⭐⭐⭐⭐

Why Worm&Co?

Results within 24 hours

After we receive the manure or fecal sample, you will receive the results along with personalized advice in your inbox within 24 hours.

Parasitology Laboratory

The worm tests are carried out by the parasitology laboratory, ensuring high quality and reliability.

Worm Control Advice

At Worm&Co, you not only receive the results of the worm test but also always get personalized advice. This ensures your animal’s health comes first and prevents unnecessary deworming.

Worm Testing Reminder

You don’t have to worry about forgetting to do worm testing, because with us you will always receive a reminder. That way, you can relax in the meantime.

Year-round Support

Our enthusiastic team is ready to assist you 5 days a week. Whether you’re looking for advice, information, or just want to consult — we’re happy to help!

Together Against Resistance

By only deworming when worm testing shows it is necessary, we slow down worm resistance and prevent unnecessarily exposing your animal to aggressive treatments.

Send copy of result

In your account, you have the option to send a copy of the result to anyone you wish to keep informed about your animal’s health. You can also send a copy directly to your veterinarian.

Digital file with logbook

Worm&Co uses a transparent online record system. You build a digital file for your animal(s). In this file, you can always view or print test results, advice, and invoices. You can also keep a logbook about your animal’s health.

What do our clients say?

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What a great company! We spent a long time searching with the vet for a solution. Eventually, the vet referred us to Worm&Co. Together with their team and my veterinarian, I have regained control over the infection. Super grateful for this dedicated team! Truly recommended!

Van Trier

July 2025
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Just last night at the riding school I was talking about your excellent service.

That definitely deserves to be said out loud. :-)

Greetje van Wetering

March 2025
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We started working with Worm&Co for our boarding stable six months ago. We house 34 horses and had been searching for the right solution instead of just standard deworming. Worm&Co sends everything neatly in a package, with clear instructions. The results are clearly readable in your own account on their website. But above all, the communication is excellent. Even if you email in the evening, you get an answer in no time. Simply great!!

Stal Dapper

March 2024
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A manure sample got lost at PostNL, but Worm&Co kindly sent me a new one. Excellent service!

Frances Jansen

March 2025
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Super fast and pleasant communication and advice! As an overprotective horse mom, I’m really very happy with it!!

Mendy Van Den Berg

March 2024
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Super convenient by post, always quick, easy to reach and great service! Also a good policy: no blind deworming when it’s not necessary, but still an overall annual treatment. Very satisfied!

Anouk

March 2025
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Professional, personal, clear, well-structured, accessible, and a scientifically based approach.

Always very pleasant contact. Professional, personal and approachable. Always willing to give advice. A great way of working. Fast, clear results with clear recommendations.
I have been a customer for years and have nothing but praise!

lse Boekhoven - Brouwer

july 2025
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I am very happy with the help from Worm&Co… And also very happy with the help from Janneke.

Cathy Peek

May 2025
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Neat, fast and affordable service. There is a helpful team ready to assist, and they provide clear information.

Maaike Bruijn

February 2025
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Quick check and also aftercare. If you have a question, you get a quick answer. Just absolutely great!

Saskia van Bijsterveld

December 2025
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First of all, thank you so much for the great service over the past year! Happy with you!

 

Anouck Boogaard

December 2022
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Thank you Worm&Co… what amazing service!!! Probably due to my own carelessness I lost an entire yearly package, and they are sending me a new one completely free of charge. In addition, we have been having our manure tested at Worm&Co for quite some time now, and we are extremely satisfied. Very pleasant, easy to reach and always thinking along with us.

Els Middelhoek

February 2025
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Top! Friendly, very helpful, and they respond very quickly. I can completely rely on them. Truly recommended.
Vivienne

Vivienne van Aalst

February 2025
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We have been working with Worm&Co for years. It’s great that reminders are sent and that we receive tailored advice within 24 hours after sending in a sample. We wouldn’t want it any other way!

Rachel Paardenhotel Putten

March 2025
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I recommend everyone to have the fecal testing done through Worm&Co. It’s so nice to be able to discuss your horse’s care regarding deworming.

Bo van Lattum

February 2024
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They reply to emails almost immediately with advice — even on an evening during the weekend. Great service and fast shipping.

De Graaf

February 2024
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I am very satisfied with Worm&Co. The delivery of products runs very smoothly. You also receive a clear report quickly, along with advice following a manure test. Additionally, the annual health package is always a treat for both horse and rider. A happy customer!

Suzan Treur de Vries

January 2025
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They reply to emails almost immediately with advice — even on a weekend evening. Excellent service and fast shipping.

Emma Buurman

September 2018
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Good and smooth communication and solution.
Expert advice.

Jolanda Kicken

juni 2025
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Lovely people who always support you with advice and tips. They really think along with you and have a lot of knowledge and experience. Top team!!!

Love, Ime, Simone and Tjalling 💙

Simone Duchenne

june 2024
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We are very satisfied with the service from Worm&Co! By regularly conducting manure tests, we know exactly which deworming treatment is necessary in case of an infection and need to deworm much less. Besides saving us money, it is much healthier for the horses. The Worm&Co team is also very involved and always ready to give advice. I highly recommend Worm&Co!

Anky van Grunsven

September 2018
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Fast service, easy and clear information. Questions are answered promptly.

 

Cobie Kruger

January 2024
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I recommend everyone to have their manure testing done through Worm&Co. It’s so nice to be able to discuss and get advice about your horse’s deworming care.

Adriana

December 2023
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Great how smoothly everything went, many thanks.

 

 

Heike Markman

February 2023
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Effective and practical.

 

Claudine Pol

December 2023
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Thanks again for the helpful advice and for the great guidance throughout.

 

 

Madelief

February 2022
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Wonderful! This makes me happy. Thank you all!

 

 

 

Diana Jennen

February 2023
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What an excellent service this is. Quick, clear, detailed, and transparent. Questions are answered promptly and clearly. Very professional :D

 

 

 

Lara Giling

February 2023
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Thank you for your great service and advice!

 

 

Maud van der Meulen

December 2022
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Good and fast advice. Deworming treatment sent quickly. Easy to order.

 

 

Jory Kolenbrander

February 2023
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Thank you for your quick response! I’m relieved.
I also want to compliment you — everything runs smoothly and in an organized way. Very happy with it. Thank you!

 

 

Monique de Bruin

December 2022
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Thank you for the great service!!

 

 

Danielle Drenth

November 2022
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Great! Then it’s all sorted. Thanks for the service and the quick email response!!

 

 

Chanice Castricum

August 2022
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Thank you for this great service. I didn’t know about Worm&Co before, but whenever I hear someone talk about a manure test, I’ll definitely refer them to you.

 

 

Rita Schutte

August 2022
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I’ve always been very satisfied with the fast service and pleasant communication from Worm&Co. Recently, I unfortunately had to mention that my horse isn’t doing well and her future is still uncertain. The next day, I immediately received a card and some tasty treats for my horse in the mail. So sweet and thoughtful! A company that truly cares and thinks along with you — wonderful! :)

 

 

Saskia de Bruyn

December 2021
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Worm&Co is excellent! This company stands for quality and service. I’ve been using Worm&Co’s services for years — always great advice and very customer-friendly!

 

 

 

Sanne Kersten

December 2021
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Excellent service! Very knowledgeable and truly think along with you. They don’t just push products. I discussed the results, pasture management, and my horse’s health with them. This way, we came to a tailored advice and a plan for the future. Worm&Co stands for an individual approach (also within a herd context). You do need to get in touch yourself, of course. I’m really happy with them!

 

 

Myrna Groenink-Mastail 

December 2021
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Ah, that’s great service!

 

 

Marloes van Zeilen

February 2022
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Good advice, quick answers to questions, and it gives me peace of mind knowing my horses are under worm control.

Puck Zuylen

September 2021
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I received the package safely, and what a lovely surprise!
Thank you so much for the nice extras.
You are AWESOME!

 

 

Sonja Bearnaart

December 2022
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A wonderful company, easy to use. Quick responses and results! And such a thoughtful card when Cassie passed away — thank you for your care! I’ll definitely come back with my next horse!

Marieke Bos-Verkuil

December 2021
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Quick response, advice, and test results. Always friendly in communication.

 

Regina Verstegen

November 2021
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The annual Health Package always feels like a gift, with great little details and useful items (like a horseshoe charm, hoof pick, etc.). They answer questions very quickly, and the manure test results arrive within a few days. Fantastic team!

Yvette van den Biggelaar

October 2021
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I received the package safely, and what a lovely surprise!
Thank you so much for the nice extras.
You are AWESOME!

 

 

Sonja Bearnaart

December 2022
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Great! Very friendly and helpful, they respond super quickly. I can fully rely on them — truly recommended.

 

Vivienne van Aalst

September 2021
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Simple, fast and effective — we wouldn’t want it any other way.

 

Bas Gill

April 2021
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Super easy and very fast results. You order a manure test, they send it to you, you send back the sample, and within 1–2 days you already have the results. Perfect!

 

Wendy Gijsbers

April 2021
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Good service and always good advice.

J. Verkleij

October 2021

Blogs

Our blogs are packed with information about your pet’s health and everything related to worms.

How do I interpret the results?

A manure test alone does not determine whether a horse needs treatment. The questionnaire, the horse’s health and age, seasonal parasite pressure, and existing records also help assess whether treatment is appropriate.

My horse tested positive, but does not need treatment – how is that possible?

It can be confusing: you have a fecal test done and the result comes back positive. Yet, the advice is not to treat. How is that possible? We’ll explain.

 

Giardia in dogs and cats – what to do?

Giardia is a common intestinal parasite in dogs and cats. The parasite is microscopic and settles in the small intestine, where it multiplies and can cause symptoms. Not only young animals, but also adult dogs and cats can become infected.

 

 

Dewormed? Don’t forget the 14-day check!

When you deworm your horse, you naturally want to be sure that the treatment is actually working. A manure follow-up test gives you that confirmation.

When can your horse go back to pasture after a deworming treatment?

After a deworming treatment: pay attention to pasture management!

Effective parasite control doesn’t stop with giving the treatment.

Lungworm in horses and donkeys: what should you watch out for?

When horses and donkeys are kept together, there is an increased risk of lungworm infections. Lungworm (Dictyocaulus arnfieldi) is a parasite that mainly occurs in donkeys. For horses, however, it can cause health problems.

 

Out partners

Together with our partners, we are committed to optimal animal health!

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