The Pest Expert Formula ‘P’ Fly Super Fumer Smoke Bomb is more than three times the size of a standard Fumer, so able to treat an area 3 times greater. Perfect for eradicating fly infestations in larger spaces such as lofts and open-plan living areas. The Formula ‘P’ Super Fumer Fly Smoke Bomb is a more powerful fumigation device than a standard Smoke Bomb, treating an area three times greater, which makes it ideal for getting rid of flies in lofts, roof spaces or open-plan living areas. One Super Fumer will treat a space of 400 cubic m (approx 16m x 10m with a standard ceiling height of 2.5m) The Super Fumer contains 11g of the active ingredient Permethrin at 13.25% w/w as opposed to 3.5g in the standard Fumer. Once lit, an insecticidal smoke is released as the Fumer smoulders, which disperses to fill the room/roof space, killing all flies present at the time of treatment.