ULV may be used as a complementary treatment to a residual insecticide in the control of crawling insects, notably cockroaches fleas and bed bugs. Pyrethrins applied as a ULV spray flush out cockroaches; irritate them so that they are less discerning as to what deposits they encounter and they thus quickly pick up a lethal dose of insecticide. This combined technique is particularly useful in areas where a residual spray will be of limited persistence , eg in areas that are washed down frequently and those where deposit of organic material on treated surfaces rapidly break down insecticides.

ULV applications allow treatment of large spaces, such as warehouses, food stores, bakeries, containers, aircrafts and residential properties against flying and crawling insects alike. They are also ideal in treating difficult areas such as sub floor spaces, roof voids and chimney’s.

ULV treatment gives no long lasting residual effect but ideal for controlling insects on exposed surfaces such as carpets and ducts and also insects on the wing, cluster flies, fleas and bed bugs. Furthermore treated areas can be entered after just one hour.