Roof Void Automatic Cluster Fly Control Kit with Prevent Auto

Roof Void Automatic Cluster Fly Control Kit with Prevent Auto

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£44.39 including VAT

All in one pack


  • Cluster Fly Control For Lofts
  • Our Best Selling Cluster Fly Solution
  • Very Effective. Comprehensive Advice Sheet Included

This pack will deal with a cluster fly problem and works out cheaper than buying the items individually. It contains an automatic aerosol dispenser with AA Duracell batteries and 3 x Prevent Auto 243ml aerosols which control cluster flies in roof voids, lofts or attics.
The dispenser is programmable to operate every 7.5, 15 or 30 minutes. We generally advise that the unit is set to dispense every 15 minutes initially (*in a 6000 cubic foot roof) and then if the initial influx is not contained within a week, we suggest you change the timer to dispense every 7.5 minutes. In particularly heavy infestations or larger roofs, it would be ideal to start on the 7.5-minute setting before dropping it down.

This is widely used for cluster fly control in roof voids – it builds up an atmosphere killing the flies in the roof using safe natural pyrethrins (flower extract).

” If there is evidence of Bats then insecticides MUST not be used

Refill tins of the Prevent Auto are available (see ‘You may also like …’) for ongoing protection.

Pack Contains:
3 x 243ml Prevent Auto.
1 x Automatic Aerosol Dispenser.
2 x AA Duracell Batteries & Advice Sheet.

*6000 cubic feet is approx. an average 3 bedroom-sized house loft.

If you have any questions or want advice for your cluster fly infestation, please don’t hesitate to call us or for more in-depth info go to our HOW TO Cluster Fly page. We’re happy to help and aim to solve your problem as best we can. Our phone number is at the top of the page.

We try to keep our shipping costs as low as possible and offer the cheapest option based on the weight of your order.

*Long items 1m and over will now be subject to a slightly increased carriage charge of £7.20 inc vat and can only be shipped on a 1/2 day delivery via Parcelforce

Orders must be made before 4pm in order to be shipped same day. We are unable to ship orders Bank Holidays and Weekends.

FREE Delivery for orders over £150 (ex VAT- UK Mainland only)


We use Royal Mail and Parcelforce for UK Mainland deliveries. Parcelforce will not leave an item safe unless we have been instructed to do so, please leave an instruction to leave safe at time of ordering.

Royal Mail 2nd Class*

2 -5 days


ParcelForce 48

Long Item Delivery 

(1m or over)

2 days

2 days



ParcelForce 24


Next Working Day**Order by 4pm Mon-Fri


ParcelForce AM

Next Working Day (Pre 12pm)

Order by 4pm Mon-Fri



Specific day delivery

Book before 4pm Friday


* Not permitted items are quantities of aerosols, over 2kg in weight and liquids. Liquids and aerosols cannot go by post to Ireland, Scotland or Jersey (Even though you may get through the cart with it).

** Some Scotland Post codes may take 2-5 days to arrive. Order by 4pm Mon-Fri


Next working day delivery is not available for the Scottish Highlands and some remote areas where an additional charge may apply.


(Northern Ireland, Isle Of Man and Isles of Scilly)

2-3 days

£24.00 inc

We no longer able to offer a delivery service to Jersey or Guernsey.


1. Although we offer a Next Day delivery there is not a 100% Guarantee that your order will be delivered next day, we always despatch on time but couriers don’t always deliver. We cannot offer any refunds if it is a day late.

2. In the unusual event where delivery is repeatedly refused or no effort is made to accept delivery, we reserve the right to pass delivery and return courier costs to the customer.

3. Orders despatched on Friday will not be delivered on Saturday unless the Saturday delivery option is selected at checkout.

4. Back orders: If your item is not in stock, we will back order for you. You will always be emailed with the option to cancel your order if you would rather not wait.

5. Royal Mail 2nd class deliveries may take over 5 days at busy times. We have to allow up to 14 days for the order to be delivered before we can resend or refund to declare it as lost.

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