Cluster Fly Killer Spray 2 x 1Ltr - Formula 'C+' Advanced Cluster Fly Spray (UK Government HSE approved and tested – professional strength for amateur use)

We moved into an old house, three years ago, in a rural setting, that turned out to be infested (and I mean properly badly infested - hundreds of the little blighters every day) with cluster flies in the loft. They come into the eaves through the (old and gappy) roof tiles, then come into the loft room from the eaves, they also find their way into the inside of the frames of the velux windows. I sprayed this onto the glass of the velux windows, and also opened the velux windows and sprayed all round the inside of the frames. It doesn't deter the flies from coming in, but it certainly kills them (very quickly) once they have landed on an area that has been sprayed. I got a second hand vacuum cleaner specifically to keep in the loft to hoover them all up. I re-apply the spray every couple of months, which seems to keep the killing power going. This year, we have noticed that there have been far fewer flies than the previous years, so I think we are gradually winning. (Cluster flies leave scent markings where they get in to let other cluster flies know it's a good place, so, as long as we can keep decreasing the numbers, I'm hopeful that the end of the infestation will eventually come!!) There are also carpet moths in the loft room (it's a boarded, carpeted room, but not to the standard of a room you could properly use, it's really just a storage area with carpet) and this spray seems to work on them too - I've sprayed loads on the carpet at the doorway in the hope that the carpet moths won't spread to the carpets in the rooms that we do use - the joys of living in an old house......!! One note, it's strong stuff, so I always wear gloves and a mask when I use it, I still sometimes can smell it - even with an FFP3 mask on, which I don't like as I reckon that if I can smell it, that means it's going into my lungs - so please use carefully!

Fantastic product. Fast delivery. Good price for 2 bottles. Easy to use and works straight away 👌

See over time

We suffer from cluster flies. Hundreds of the little rascals. I’ve tried all sorts but this kills them in seconds. It’s clear and if sprayed where they land “they drop like flies”!It’s a serious product so protect yourself but I’m curing a problem with flies that we’ve had since moving to our house 5 years ago.

We have bought this product several times as it works very well alongside the bombs on cluster flies and clothes moths. My husband managed to rid his workshop of a cluster fly infestation and then we used it around our home for the same reason and we haven’t had a problem since. We reuse it every year just to make sure they don’t come back.

Having tried every possible other product to get rid of cluster flies I tried this. Success was limited but there was success. I was a little disappointed until I realised what I was trying to defeat were not cluster flies - but some other super-human undefeatable beast.Word of warning on this one - it stains absorbant surfaces - so really read the instruction before you go crazy.

I used this to deal with cluster flies in my velux windows, they were a real problem, every time a window was opened between September and May, hundreds of flies flew in! I sprayed the frames with this and it deters the flies from settling in the windows, result!!

Every year we get plagued with tiny yellow cluster flies you can not see out of the windows and ceiling in lounge is always covered in the evening with these peskie flies. I sprayed outside drain pipes, gutters and wiped window surfaces inside and out millions lay dead with in an hour. Wear a mask and suitable eye protection there is no smell well worth the money reapply about every 10 days 😀