Logic Firm - 10ml


Logic Firm is a balanced and proven intestinal support for cats and dogs.

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Most orders are sent by 1st Class Royal Mail. We aim to deliver your goods within 1-2 working days from dispatch. See more.

Logic Firm is a balanced and proven intestinal support for cats and dogs. Diarrhoea is an extremely common problem in dogs and cats and has a variety of potential causes for example:

Dietary sensitivity



Bacterial infection

Viral infection

Pancreatic disease

Inflammatory bowel disease.

A number of supplements are available, such as Logic Firm, that help to support intestinal function. These contain intestinal cells, and absorbing toxins. There are also newer products available which prebiotics (such as Logic Firm). These help to maintain intestinal flora by promoting the growth of good bacteria at the expense of potentially harmful pathogenic bacteria.

10ml syringe for cats and dogs weighing between 2-7kg

24ml syringe for dogs weighing between 7-30kg

60ml syringe for dogs weighing between 30-60kg

How much do you charge for Postage and Packaging?

Nothing! Postage and Packaging is FREE on all orders. *We do operate a minimum order value of £8.50. Orders under this amount will be charged £1.96 for Postage and Packaging

When should I expect my order?

We aim to process all online orders received by 8.30am on the same working day. For orders placed after 8.30am we aim to process the next working day. Orders placed after 8.30am on a Friday will be processed on the next working day, i.e. Monday.

Small Items: such as flea treatments, worming tablets and household sprays are sent by Royal Mail First Class. 

Royal Mail First Class aims to deliver your goods within 1-2 working days, however, this is not guaranteed. Most small items are packaged to allow your postman to deliver your order through your letterbox. 

Large Items: such as dog food or orders over a certain value are sent by ParcelForce Next Day. 

Parcelforce do not operate on weekends, therefore orders sent on Fridays will not be delivered till Monday. These parcels will require a signature on delivery. If delivery is not successful the first time, a card will be left instructing that you can either collect your parcel from your local Post Office or arrange a redelivery at a more convenient time.

Help! My order hasn’t arrived!

If you experience any delays in receiving your order please email us on sales@petfleas.co.uk or telephone 01829 734098. Our office hours are 8.30am - 5.00pm Monday to Friday, 9.00am - 1.00pm Saturday