SWAK Dispenser (Price: £49.99 )

This is an excellent solution to cluster flies in the loft. It contains a natural pyrethrumbased insecticide which it releases on a timed basis. Simply stand the unit in your loft or problem area and the dispenser will release a puff of pyrethrum into the air eliminating cluster flies as they come into hibernation. Use between August and December for maximum effect.

First ensure that you do not have bats roosting in your loft.