Fill in your details below and click 'Submit'
Pest Expert Formula 'C+' Cluster Fly Spray contains cypermethrin (0.1% w/w), which kills cluster flies fast and leaves a long-lasting residue that maintains cluster fly control for up to 12 weeks.
Formula 'C+' is a ready-to-use insecticide that is safe for direct application to alighting surfaces including window frames and roof timbers. As Formula 'C+' is water-based and low odour, it is ideal for treating cluster fly infestations in both domestic homes as well as commercial premises.
One litre provides effective coverage to an area of approx 20 sq m. The product is supplied in a bottle with an adjustable trigger spray to enable a thorough and even distribution of insecticide.
For a comprehensive cluster fly treatment, we recommend using alongside Pest Expert Formula 'P' Cluster Fly Powder and Pest Expert Formula ‘P+’ Foggers as the combination of different active ingredients enables a faster and more effective knockdown.
Alternatively see our Cluster Fly Killer Kits for a complete package of the best cluster fly killer products on the market.
How To Use Pest Expert Formula C Fly Killer Spray
1. Screw the spraying mechanism tightly into the bottle.
2. Apply 1 litre of Formula C per 20 square metres or directly at insects
3. Allow 45 minutes – 1 hour for the solution to dry.
4. Wear suitable protective clothing and gloves.
5. Cover all water storage and fish tanks before application.
SPACE TREATMENT: Apply 1 to 4 ml of product per m3 as a fine mist
SURFACE SPRAY: apply 20 ml of product per m2, slightly wetting the surfaces to be protected.
Use Insecticides safely. Always read the label and product information before use.
TO AVOID RISKS TO MAN AND THE ENVIROMENT, COMPLY WITH THE INSTRUCTIONS FOR USE.
Maybe 1L of spray was overkill but it seems to have done the job and still have more than enough left for next year!
We have a big problem with cluster flies.
Cost a furtune in professional fees last year.
Our local pest control man recommended this product and we hope it works. Its not yet cold enough for the cluster flies to have come into our loft but fingers crossed it will work when they do
Does what is says. Product works
fantastic stuff kills on contact does exactly what it says.
Protector C is being very effective with the problem I have. I will order this product again, I have found it very easy to order and delivery was very fast.
Fantastic product. This is a great product, delivered straight away
I recommend using Pest Control Supplies because they tick all the boxes in regards to customer needs.
Superb product di d exactly what it said it would do.
Very happy with my purchase.
I bought a Spider & Insect Killer from this website, which I decided on after a lot of research. I am very happy, as the product did what I expected and exactly as described. Additionally the ordering and delivery process was flawless, I was kept updated by e-mail on the status of my order and it arrived in a very timely manner. Overall great purchase and very professional service from Pest Control Supplies. Thank you.
Fantastic Product! Does exactly what it says on the label
Bought this second year in a row due to its amazing and long lasting effectiveness against flies. Sprayed it on velux windows around the house and everyday for a week or so we could see dead flies near the windows. Very effective when used in combination with smoke fumers.
Great product but needs regular use to keep at bay.
It seems very good stuf I have knocked them down in flight and am now seeing less in flight.
Bought this because we had a lot of slow moving kind of flies walking across the carpet. Easy to use and haven't seen any of the flies since using it.
Does what is says. Product works
Killed the dam pests!
Used two of these to remove cluster flies. Did the job well and pestcontrolsupplies were spot on with delivery and communication.
Kill em All.
Bought this because I wasn't sure what insects I had in the house. Sprayed everywhere and it killed everything - thanks.
Fantastic stuff kills on contact does exactly what it says.
it is the BOMB!!!!!!
DOES WHAT IT SAYS ........5*
Used these products to get rid of cluster flies, very easy to use, Cheers
Instant action and carrys on working for days.
Does what it says on the tin!!!
Keeps our garage free of all flying insects, spiders, woodlice, zaps everything for months. What a great product.
This product does all it says - within 24 hours there was absolutely no trace of mosquitos etc
Very, very impressed.
Very happy with my purchase.
I bought a Fly Killer from this website, which I decided on after a lot of research. I am very happy, as the product did what I expected and exactly as described. Additionally the ordering and delivery process was flawless, I was kept updated by e-mail on the status of my order and it arrived in a very timely manner. Overall great purchase and very professional service from Pest Control Supplies. Thank you.
Great and easy to spray works a treat.
Finally found an effective Spray.
Excellent product and good speedy delivery.
This spray does exactly what it claims to do
Definitely kills on direct contact and pretty sure it works on indirect contact
At last! After trying all the readily available off-the-shelf fly sprays, I've finally found one that does what it says on the tin - kills flies.
It is by far the best insecticide out there , you apply it once and it causes carnage to any undesirable infestation, all is left the day after is to do a body count.
An excellent product for the iridication of flies in particular five star rating.
Nothing works better!
Used this in our shop as it's a very old building and we get a LOT of crawling insects inside.. One spray around the shop, all round the edges and doorways and the next day we went in there were many many dead insects everywhere! After that we had months of insect free days. Six months on and they just starting to appear again so we have purchased another spray gun to eliminate them again. If you don't like insects then this is the spray for you!
This stuff is the only one that works against flies.
I have used this around all my door frames and window frames and in cracks, skirting boards and cupboards. I have only had a couple of flies in the house so it could well be working. I have used the full bottle of it so I may order some more soon.
THE PRODUCT WAS VERY USEFUL VERY IMPRESSIVE ITS VERY EASY TO USE NO SMELL NOTHING JUST READY TO USE
very effective product and long lasting, bought it this summer but through winter, found it works as well for ladybug infection....it is my new go to product
Quick delivery and good price.
Excellent product. 10/10.
Didn't see any instant results on the first use but the second time seemed to nearly get rid of the critters. Will be buying again to see if I can get rid of them once and for all. Would highly recommend but be patient
Needed something that kills a lots of different insects and founds on Pest Control Supplies
Delivered quickly and decent product.
Good product, does the job, with good customer service.
Great product, easy to use, did the job after a couple of applications.
The flies definitely don't like this stuff,cleared the garage no problem,outside the house it maybe lasted a couple of days on the fence and maybe a week on the brickwork as the weather was dry.