Deosect Spray is a straw-colored or pale yellow emulsifiable concentrate designed for the control of flies and lice on horses. It contains 5% w/v cypermethrin (cis 50: trans 50), a residual insecticide.
To use Deosect Spray, it needs to be diluted with water just before application. You can use a knapsack or hand sprayer, or even a sponge, to apply the solution. For best results, the diluted solution should be used within 24 hours.
This product is safe to use during pregnancy and lactation, providing effective fly control for horses.
When using Deosect Spray, dilute one liter (2 pints) of the concentrate with 50 liters (11 gallons) of water. Alternatively, you can follow the dilution rates mentioned in the table below:
Deosect Water
10 ml 500 ml
20 ml 1 litre
100 ml 5 litres
200 ml 10 litres
Ensure thorough coverage of the animal, paying attention to the face, legs, back, and hindquarters. It is recommended to use a medium fine spray to prevent fogging. Avoid spraying directly into the animal's eyes. The amount of diluted solution to be used is:
Horses – 500 ml per animal
Ponies – 125 ml per animal
For fly control, start applying the solution at the beginning of the fly season and repeat monthly for general control or every two weeks for severe head and face fly control. For lice control, apply when lice are observed and repeat as necessary with a minimum of 14 days between applications.
When handling the concentrate and diluted solution, it is important to wear protective gloves, face shield, rubber boots, and protective clothing. A face shield should be worn when handling the concentrate.
Deosect is a licensed medicine for fly control in horses and has been proven safe and effective.
Shipping charges mainland GB zone1
| Value | Weight | Delivery Charge |
| Over £49.00 | Any Weight | FREE |
| Under £49.00 | No weight limit | £4.50 |
| Under £49.00 | Under 250 grams | £3.49 |
Most orders are despatched the same day and standard delivery is 3 to 5 working days from despatch. FAST Expedited options are available at extra cost - these usually arrive in 24-48hrs from dispatch but delays are possible during busy periods.
Postcodes outside of Zone 1 (including some areas within mainland UK) may incur extra carriage charges due to surcharges imposed by the couriers. These will be calculated on the website at the checkout.
NB: Orders placed with faster delivery must be placed before 13:00 to ensure same day dispatch (excluding weekends and bank holidays). Please also check on the product page that the items ordered show 'In Stock' otherwise your order will be delayed until the stock becomes available, which in most cases will only be 24hrs.
Estimated "Usually shipped in" information is shown against most products
Overseas orders
We no longer send goods outside of the UK.
Prescription Items
Prescription items will be sent on receipt of a legally valid signed and dated prescription.
Pick up
We offer a pickup service for orders placed over the phone.
Please ring us on 01833 641112 for more information.
Refrigerated Items
- Refrigerated lines Packaging Cost: Despatched with Woolcool Refrigerated Packaging for £7.50.
- Receipt Required: Someone must be available to receive the delivery. Woolcool packaging is designed for temperature-controlled goods, so parcels cannot be left unattended.
- Immediate Refrigeration: Upon receipt, refrigerate the contents immediately to ensure your food or medicine remains at the correct temperature.
- Failed Delivery Attempts: We are not responsible for the cost of replacements if a delivery attempt fails due to the absence of someone to receive it.
We want you to be completely satisfied with any purchase. If not any item* can be returned to us within 14 days of receipt for exchange or refund Please give us a ring for a returns number on 01833 641112 or alternatively email sales@hyperdrug.co.uk to obtain a returns number.
*Due to legal requirements medicines may not be returned except to correct an error in despatch or in response to an "official recall". If an item is believed to be faulty it should be returned for inspection and it may be necessary to forward it to the manufacturers for testing before replacements or refunds can be authorised. This does not infringe legal rights. Please contact our customer services for a "Returns Number" which must appear on the outside of the package or it will not be accepted. We advise customers to use an insured method of shipping and to retain proof of despatch. We may refuse returns on products specially obtained or manufactured to order. Items must be returned unsoiled and unused and sent adequately packed and carriage paid.
