Deosect Fly Spray

Deosect Fly Spray is used monthly for the control of flies and lice on horses. It is for use with a sponge or handsprayer. Please not as Deosect is calssified as POM-VPS you will be required to complete a questionnaire before your order can be dispatched.
Pack Size: 250ml
RRP: £43.95 | YOU SAVE: £-0.01
Deosect Fly Spray
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Deosect Fly Spray 5% w/v concentrate for cutaneous spray solution must be diluted and mixed with water to make a solution before use.

A knapsack, handsprayer or sponge may be used to apply the solution. The diluted solution should be used within 24 hours.

You can find more information on the VMD website. Here is a link to the page

Delivery Information

United Kingdom Deliveries (including Northern Ireland)

Delivery is FREE for any UK order containing an NHS prescription.
Delivery is FREE for all UK orders Over £40.


We use a selection of proven couriers including Royal Mail, HDN, and UPS depending on your location and weight of your order. During any dispute our contingency arrangements are activated to ensure we continue to meet our service levels.
Orders received before 3:00pm are picked and dispatched on the same day and will usually be delivered to you within one to five working days anywhere in the UK depending on the delivery service you select (there may be delays to the Isle of Man and the Scottish Islands).


Keen Pharmacy also offers a range of delivery options to meet our customers' requirements:

•    Next Day Delivery (£5.50) The orders will be delivered by Royal Mail Special Delivery. The delivery time for your Next Day Delivery is 24hrs from dispatch. Please note that delivery times are in business days, and that for orders placed on Monday to Thursday before 3pm, you should receive your goods the next business day. Orders placed after 3pm Thursday, but before 3pm on Friday, should be received by Monday (except Bank Holidays). Weekends are not counted when ordering Next Day Delivery. i.e. If you order on Saturday or Sunday, it will be treated as if you ordered your item on the following Monday. We are not responsible for delays by our carriers but we will do our best to resolve any issues that may arise. During high volume holiday seasons delivery times may vary.

•    Standard Delivery (£3.45) The orders will be delivered by Royal Mail 1st Class. The delivery time for your Standard delivery is normally 1 to 2 working days . In a very small number of cases the Royal Mail may not meet this service level. In this situation please allow 7-10 days from dispatch before contacting us

Orders containing Prescription Only Medicines including controlled drugs and other medicines will require a signature on delivery. You can also arrange for your order to be delivered to alternative addresses including your office, members of your family  You need to ensure that someone approved by you is able to sign for the delivery. Please note that deliveries are made to the delivery address you supply to us. Re-dispatch of any returned orders may incur an additional delivery charge.

All BFPO orders will be sent through Royal Mail Super Saver Delivery.

If you have any questions regarding delivery times, or to check that an item is in stock, you can call us on 01260 295701 or email us at

Overseas Deliveries

We are able to supply orders to most countries in Europe. Delivery charges will depend on the weight of your order and the destination. We will confirm the delivery charge at the checkout page, before you confirm payment of your order.

Non-prescription orders are sent by air recorded delivery and a signature will be needed upon receipt of your goods. Certain individual countries place restrictions on the types of products that may be posted into them. We will inform you individually if there are any problems.

Prescriptions delivered to non-UK destinations will be sent by Royal Mail international recorded delivery and a signature will be needed upon receipt of your goods.  Delivery will typically take 7-10 days. Faster delivery options are available upon request.

Under UK law we are only able to dispense prescriptions written by practitioners who are registered in the European Economic Area.


Heavy Parcels

We reserve the right to decline orders on heavy items or to contact you to arrange delivery costs.

Horse and Ponies - Fly and Lice control - Careful attention must be paid to total animal coverage, especially the face, legs, back and hindquarters. The following amounts should be used to give a 1:50 dilution,

10ml 500ml
20ml 1 Litre
100ml 5 Litres
200ml 10 Litres

A medium fine spray is advisable to avoid fogging of the diluted Deosect.
The following amounts should be used:
HORSES: 500ml of diluted solution per animal
PONIES: 125ml of diluted solution per animal.
For Fly Control: the application of the solution should commence at the onset of the fly season and be repeated monthly for general fly control and every two weeks for severe head and face fly control.
For Lice Control: Apply when the lice are observed and repart as necessary at a minimum interval of 14 days.
For animal treatment only.
Keep out of the sight and reach of children.
For external use only. Avoid spraying directly into the animals eyes. Avoid application to broken skin lesions. Wear impermiable gloves, face shield and rubber boots when handling the concentrate, diluted liquid and when spraying animals. USe in a well venti;lated area and avoid inhaling the spray mist. If splashed in the eye or on the skin, wash with plenty of clean running water and seek mediacl attention. Remove contaminated clothing and wash before re-use.
Do not smoke or eat while handling the product. Wash hands and exposed skin after handing the product and before meals.
Dangerous to fish and crustaceans, do not contaminate waterways, ponds and ditches with the product or used container. Rinse container thoroughly with water and do not recycle. Not to be used in animals intended for human consumption. Treated horses may never be slaughtered for human consuption. The horse must have been declared as not intended for human consumption under national horse passport legislation.
Contains cypermethrin technical (cis 50 trans 50) 5% w/v
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