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Fogging in an Urban Environment
There are a number specialized situations where small droplet technology brings many advantages. This enables
optimum results to be achieved in areas often regarded as difficult to treat and also offers the opportunities for
some novel applications.
In enclosed spaces such as found in homes, offices, and public places, flying insects can be controlled with the
Thermal Fog or ULV (Cold Fog). While the treatment must be carried out with the building closed to public access,
this is an economical alternative to ready to use aerosols.
The treatment of ducts in buildings can be effectively achieved using ULV machines fitted with a flex hose. These
machines can efficiently apply duct sealants, smoke deodorizers
and pyrethrum insecticides.
ULV machines are ideal for spraying natural pyrethrum when they are being used as a flushing agent for insects such as
cockroaches. Not only does it make the treatment more economical than ready to use aerosols, but the flex hose can be
used to treat areas inaccessible by conventional means.
Control of flies, gnats and other flying insects can be achieved in garbage landfill sites. Normal practice would be
to cover the garbage at the end of each day, but it is not always productive to cover the face of the tipping area, and
this fresh, exposed garbage should be fogged using the prevailing air currents to carry the fog across the garbage.
A deodorizing formulation can also be successfully applied in this way.
The emission of dust from dry surfaces can be minimized by keeping the surface damp. ULV machines with a float tank
can conveniently achieve this with minimum disruption in working areas to help protect from harmful dust created such
as when removing asbestos.
Inert thermal fogs can be used to fill sewage systems with a suitable fog not only to test new systems but also to check
existing systems where foul water sewage is required to be kept separate from rainwater run-off. In a correctly installed
system the fog will not enter the premises because of the water traps at the sinks, faucets, etc., but unauthorized
connections will be easily detected.
ULV and Thermal Fog applications can be applied to sewers where it is desired to control disease vectoring insects such
as cockroaches using a suitable insecticide like natural pyrethrum.
ULV and thermal fog can be used for applying bird repellants into trees and around airports and landfills.
Thermal fog is used for creating special effects in the entertainment and other industries. A special effects fluid
is available for use in the machines and is available in 3 grades light, normal, and heavy is particularly recommended
for use in the training of firefighters.
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