tg_efficacy_pt18pt19_superseded_en

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Transitional Guidance on PT18 + PT19
September 2016
been introduced artificially (usually in small cages). The effectiveness is
determined by scoring the number of alive, ‘knocked down’ and dead organisms
in comparison with an untreated room.
12.3 Assessment of authorisation
12.3.1 Norms and criteria
A biocidal product may only be authorised if it “possesses a sufficient level of efficacy”.
This is implemented for stored goods attacking-insect in the following way.
consumer products: normally 100% mortality in direct spray tests, in simulateduse
tests >90% knockdown and >70% mortality after 24 hours would be
sufficient;
gases: the duration of gassing (as specified in the label claim) should be such
that at the end of gassing 100% of the insects/mites are dead or dying.
It is possible to distinguish between dead and dying insects, which will not
recover anymore, so these should also be counted;
the duration of gassing should not be longer than necessary;
all non-gases: the effect should be achieved within the duration of the treatment,
as specified in the label claim. Normally >90% would be sufficient.
Deviations from these norms is possible but should be justified in the application.
13. Flies
13.1 Introduction
Flies are common pests in and around the house and in animal rearing facilities. Some of
these insect species are merely a nuisance, others provide discomfort from irritating
bites, and some potentially carry and transmit diseases.
The possible fields of use of the insecticides include: residential and other types of
accommodation, public spaces, hospitals, storerooms, kitchens, waste dumps and
stables and manure storage facilities.
13.1.1 Biology
House flies (Musca domestica) and other nuisance flies are common non-biting pests in
the EU. The house fly lifecycle goes through four stages: egg, larvae (maggots), pupa,
and adult. Eggs are laid on organic debris including faeces, decaying vegetation, etc.
Once hatched, larvae feed by burrowing into the organic debris and filter decaying
organic matter. In the pupal stage the fly is transformed into the adult. During this
transformation, no feeding takes place. At the adult stage, house flies feed by
regurgitating on food, then lap up the food in liquid form. The life cycle of house flies,
from egg to fly, is 1 to 3 weeks, depending on the climate conditions. Males die soon
after mating, females live temperature dependent normally one to several weeks in the
field.
Flies regularly fly into and out of man-made structures. Outside, flies land on faecal
material and other debris. Inside, flies land on human food and contact other substrates
regularly touched by humans. Here, potential pathogens can be transferred on the flies’
body (legs) or from inside the body (vomiting on potential food in order to feed) which
are picked up in faecal or other decaying material. More than 100 germs have been
documented as being transferred by house flies. Among them are Salmonella sp. and E.
coli have been documented as being transferred by house flies.