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400g Box

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  • 400g Box £51.49


Copro-nil is used for the prevention of animals eating their own faeces


Simply sprinkle COPRO-nil™ onto the animals normal food. Ensure that each meal is eaten and discard any food left over before the next meal. COPRO-nil™ can be used with both wet and dry food. The faeces produced from this food will possess a very unpalatable taste. All animals in the household should be treated at the same time to ensure good re-enforcement of the unpalatable 'message'. Remember that food takes 12 – 24 hours to pass through the digestive system so COPRO-nil™ will only be effective after this 'lag' time. This product is not an enzyme mixture which can alter the normal digestive process.

DOGS: One level teaspoon per day for every 10kg divided between feeds (generally recommended as twice a day) for 10 -14 days. Up to a maximum of 4 teaspoons per day.

COPRO-nilâ„¢ - A taste modifier to discourage coprophagic behaviour

Sprinkle evenly on the dog food at each feed, (moisten dry food if necessary). Eg a 20kg dog fed twice a day would require one level teaspoon in each meal. This will usually curb coprophagy for months, often permanently.

VERY SMALL DOGS AND PUPPIES: In dogs and puppies less than 5kg the amounts of COPRO-nil™ may be difficult to measure, so please contact your vet for advice.

CATS: ½ level teaspoon per day, divided between the feeds in a day for 5-7 days.

HORSES: 3 level teaspoons, morning and night, for 2-3 days may help to curb this habit.

For older dogs and cats who have been habitual coprophagics over a long period of time it may often be necessary to feed COPRO-nil™ for one month to six weeks to curb the habit.


Safe use in pregnant animals or animals intended for breeding has not been proven. If the condition of the animal worsens cease product administration and consult your vet.

Consult your vet BEFORE using COPRO-nil™ if your animal is on a restricted sodium (salt) diet or is receiving a vitamin or iron supplementation, or if your animal is taking epilepsy medication. Make sure the animals are not on steroids because this can counter the effect of COPRO-nil™. If in doubt please contact your vet.

Need help or advice? Contact us:

  • Landline: 01582 842096
  • Mon - Fri: 8:30am - 5:00pm
  • Sat: 9:00am - 1:00pm (Collections only)
  • Email: [email protected]

All prices include VAT where applicable.

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. To find the exact cost of shipping your item, and to see all options available, follow these steps:

  1. Put the items you wish to order in your basket
  2. Proceed to checkout and enter your delivery address, including country
  3. Delivery information including price will automatically update to what is available to you

Delivery of aerosols

Due to restrictions aerosols can't be sent by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as non-ambient items and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (2)

Q & A

Below are some recent questions we've received regarding Copro-nil, including answers from our team.

23 May 2018 at 8:15pm


Sandra Tomsett

Im confused so hope you can help me. The dosage directions say a maximum of 4 teaspoons a day on your website but the actual container says 1 teaspoon per 10kg of body weight for a dog and doesn't give a maximum.
My dog weighs 62kgs . . . How much should l give her please . . . 4 or 6 spoonfuls per day.
Thank you.

  • Website Content Developer

Hi Sandra,

Thanks for getting in touch.

It is one teaspoon a day for every 10kg of bodyweight, but only up to 4 teaspoons a day. Even though your dog weighs 62kg, you should only dose 4 teaspoons.

I hope this helps.

29 December 2017 at 8:21pm


Sue Whitlock

  • VioVet customer since 2010
  • From: Durham, United Kingdom

Please can you tell me the active ingredient(s) of Copronil, and what else it contains? Thanks.

  • Veterinary Advisor

The ingredients are Yeast extracts, Thiamine, Ferrous sulphate, Glutamatic acid.

2 December 2016 at 4:10pm

Eating other dogs poo

Mr Robert Whitehead

  • VioVet customer since 2015
  • From: Dorset, United Kingdom

Does this work for eating other dogs poo or is it just for eating their own

  • Veterinary Advisor

This will only work for the faeces of dogs that have been fed the Copro-nil since by adding it to the dogs food it will make their faeces unpalatable. If you have more than one dog in the household you can feed it to all dogs to prevent the dog in question eating it but will not stop the dog eating poo from dogs not fed on Copro-nil.