When control of large aggregations of flying insects occur indoors it is frequently necessary to bring them under control quickly before transitioning to longer term maintenance solutions e.g. the use of metered time release aerosols or insect traps.
The most effective solution in these situations is ULV misting, incorporating synergised pyrethrins which are non-residual and formulated from natural botanical active ingredients. These treatments invariably require the premises to be evacuated and other health and safety considerations to be kept foremost.
By its very nature the residual action of ULV mists has a very short lifetime (although it does leave a non-toxic protective layer on surfaces) and clients may need to transition to alternative forms of flying insect control to keep insects to a minimum.