There are approximately 70-80 species of fleas in Australia (Order
Syphonaptera), the most common being the cat flea and the dog flea. They are
1-6mm in length and black or brown in colour. The cat flea is far the more
common species, with this parasite being found upon both dogs & cats. People
often refer to "grass fleas "or "sand fleas." It is incorrect to assume that
these fleas just live in the grass or sand. They are usually cat fleas that
their pet has deposited on the ground. All fleas are blood-sucking parasites and
they need a living host in order to survive.
Fleas are wingless insects with a laterally flattened body, hairy with hooks on
their legs to move easily through and to grip onto the fur of their hosts. They
have very powerful hind legs that have a rubber-like resilin in their joints.
When they compress these legs and release them, they are catapulted into the
air, by as much as 20cms up & 35cm horizontally-150 times their own length! That
is comparable to a person jumping onto Ayres Rock.
LIFE CYCLE:
A female flea can lay up to 25 eggs in a day and over 800 in a lifetime. The
eggs hatch between 5 & 14 days becoming larvae. These are blind & leg-less and
feed upon organic matter such as dried blood from the host. After 2 to 3 weeks
the larvae are fully grown, spin a silk cocoon and become pupae. When a
stimulus in the form of vibration or heat is sensed, the pupa emerges as an
adult. This can take from 2 or 3 weeks normally, or over a year to happen. This
explains why people returning from holidays & entering their houses are attacked
by large numbers of fleas. An adult flea can survive for over 4 months without a
blood feed.
CONTROL:
Fleas are controlled by firstly ensuring that the host animal is regularly
bathed in a residual flea shampoo or rinse such as "Saint Bernard Flea Shampoo
or "Permoxin." These shampoos contain the insecticide Permethrin, which is a
synthetic pyrethroid. There are other Organo-phosphate based shampoos and rinses
such as "Gamma-wash" & "Mala-wash"(Diazinon & Maldison as active ingredient).
These are residual insecticides, though they are smelly, a lot more toxic and
fleas are becoming chemical resistant to them. Regular bathings in Summer are
every 2 weeks to 1 month and less often in winter.
When bathing is not a regular occurrence or the animal is introduced to an
environment where there is a current flea infestation, flea breeding can result.
When fleas are laying eggs in the fur of the host, some fall off onto the ground
or where the pets usually reside, carpet and bedding etc. To gain effective
control of fleas, the following preparations should be made:
All children & pets should be removed from the areas to be sprayed
All loose items should be taken away from the floor and ground areas
The lawns are to be mowed and dry areas to be hosed if it is a hot day.
(This is to float the flea eggs to the surface and to help keep the
insecticide from evaporating too quickly)
A thorough vacuuming of the carpet just prior to treatment, paying
attention to skirting board areas and underneath furniture & lounge
cushions.(This where rubbed off skin and larva live). Vacuum bags to be
sprayed with fly spray or discarded
THE SUB-FLOOR AREA IS TO BLOCKED OFF FROM ENTRY BY PETS. Pets and people to be kept away as much as possible from infested areas. This
will have to be for at least 1 month in some cases. (It
is a condition of warranty that this is carried out. Yes, it
matters that much!)
Bedding of pets to be thoroughly washed or discarded
In severe infestations an Insect Growth Regulator (I.G.R.) may be used in
tablet form which is added to the pet's food. (This can be obtained on
prescription from vets - trade name "Programme"). Another method of control by
using tablets is a systemic method of control-trade name "Pro-ban."
Finally, the pet should be washed as soon as possible after the treatment
with a residual flea rinse or shampoo such as "St. Bernard Flea Shampoo," or
in the case of cats, a residual flea powder. This should continue on a regular
basis, preferably every two weeks in the warmer months to a monthly wash or
powder in the cooler seasons
Using these simple pre-cautions will ensure that freedom from flea
infestation will become a fact. Success definitely won't happen overnight,
although very pleasing results will occur approximately one month after
treatment if these practices, as outlined above, are carried out.