Cluster Fly Killer Smoke Bombs 4 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product)

verry good

Fantastic, would highly recommend. Unfortunately, the second lot of two didn’t light or smoke and couldn’t be re lit. Have emailed customer service. Kills the majority of loft cluster flies with just two. Two more probably needed to kill the rest.

Cluster flies are a nuisance (these are nothing to do with house flies and are no indicator of hygiene or cleanliness) which gather in cracks in the ceiling beams of old houses and swarm when you put the heating on. However, one application of these smoke bombs and they (literally thousands of them) dropped down dead as if from nowhere.

I personally found they work perfectly. I used two of the cannisters in my loftspace, left it overnight and no more cluster flies (so far) Job done!

They do not produce much fog/smoke. I used all 4 and helped in loft but bought another 2 can foggers from other supplier to complete job.

We have purchased these bombs three times as have been having a real problem with cluster flies in the loft. We had been having some success in eradicating them by using these bombs, but with the last purchase 2 of the 4 bombs were faulty. They initially lit, but went out after a few seconds (once the touch paper had burnt) but then they failed to give off any odour - they were completely dead - not smoking, smouldering or giving off any gas/smoke.As we have used these bombs 8 times previously, we know what to expect from them. When we contacted the company to express the issues, they requested photos. After they received the photos they refused to believe that the bombs were faulty, and fobbed us off with jargon.They should learn to take the customer’s word for it - especially when we have used them 8 times before! They need to appreciate that not all their products are infallible, and indeed there are plenty of other companies on the market that sell the same products, of which we will be using going forward.

We used this product as we had a problem with flies. It’s an annual problem at this time of year for some reason. We lit the product and left it in the affected room overnight. The following morning, the flies had died and were on the floor and windowsill I highly recommend this product. Easy to use…doesn’t have an unpleasant smell and good value for money!

I have a large loft which was infected by cluster flies. I lit 2 smoke bombs, placed them in the loft and closed the hatch (ensuring that the smoke bombs were placed on fireproof dishes and kept well away from any loft insulation) As described on the packaging the bombs gave off a great deal of smoke, although none manage to seep through into the upper floor. I left the bombs in the loft over night and checked for flies the next morning. The bombs appears to have worked as there was no evidence of cluster flies the next day. I will continue to check the loft and should they re appear I have another two smoke bombs as the product was supplied as a pack of 4. The smoke bombs are easy to use and did exactly what I wanted them to do. As the product is toxic it is important that you follow the instructions supplied, if you do this they are easy and safe to use.