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

I use them for my boarding kennels, I treat the hold place twice a year, brilliant stuff, kill mites and fleas

Paid £80 last year for cluster fly treatment, that was with £10 off as my neighbour had the treatment too. I was told they could come back each year which they did, fortunately not as many. I set two smoke bombs off on a cooking tray in the loft and went out. When I came back I just had a quick Look and couldn’t see any of the flies, want to leave in 24 hours before going in properly but I’d say it’s been very effective. I wasn’t sure what to expect but the smoke just rises steadily and fills the air, no sparks or anything crazy. Bit like incense smoke but more intense. I’d say it’s a brilliant product as it’s cost around £7.50 to treat. You get a piece of paper included which tells you how much to use for the size of the area that needs treating and also for what pest you are trying to exterminate

One was faulty but when they do work, they work!

Excellent product. Does a good job

A total waste of money. Bought 4 and every single one took alight, burnt through the centre leaving the actual poison product around the rim. They burnt down to the bottom within a minute and a half and let off very little smoke in the process. Bear in mind also, my flat is tiny and I used 4! Total waste of money. I really cannot recommend this product and, for the price paid, feel totally ripped off to be honest. Cannot show pictures as thrown away before asked to submit my review, which is a real shame.

These are not worth buying, very small, bought 4 and only 2 worked. The 2 that didn't work only smoked a bit then got hot for 1 minute then nothing. It took 2 in a small loft to do the job so not good value. I understand that they do a large version that should be the normal size.

We had annoying cluster flies gathering at the upstairs windows and there were loads of them in the attic. We have quite a big loft space so I was wondering how many of these would be needed to do the job. I suited up and lit two of them with a long reach lighter. I closed the hatch and left it for about two hours and when I returned for a gander the place was like post apocalyptia. Looking forward to next year's showdown.

Does exactly what’s it’s supposed to, no more flies!