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Pestech Australia manufacture products

based on Natural Pyrethrum Extract

based on Natural Pyrethrum Extract

For more than 150 years, Natural Pyrethrum has been in constant use… killing all arthropods!

It still does its job on all of them! All insects, all spiders… and, all you need to do is hit them.

Natural Pyrethrum:

  • Kills on contact – the pest dies within minutes
  • 1-day withholding period
  • There is no insect resistance
  • Mammals cannot develop chronic poisoning
  • Re-entry when the last droplet settles
  • Protective clothing during application is not specified


Natural Pyrethrum – it works, softly, quickly


Check out PyBo Natural Pyrethrum Insecticidal
Concentrate for yourself…

for FREE!

It kills every insect you hit.

To avoid bees, spray at the end of the day. Natural repellency keeps them away until it is safe… simple!

I’ll give you a FREE 1000 litre tankful to try. If you’re a commercial grower, I’ll happily send you enough PyBo to make 1000L of spray and tell you how to kill the pests on your crop.

It’s a FREE trial sample and there’s no catch!


Check out PyBo Natural
Pyrethrum Insecticidal
Concentrate for yourself…

for FREE!

It kills every insect you hit.

To avoid bees, spray at the end of the day. Natural repellency keeps them away until it is safe… simple!

I’ll give you a FREE 1000 litre tankful to try. If you’re a commercial grower, I’ll happily send you enough PyBo to make 1000L of spray and tell you how to kill the pests on your crop.


It’s a FREE trial sample and there’s no catch!



PyBo – Natural Pyrethrum Insecticidal Concentrate

Natural Pyrethrum is the world’s most versatile insecticide. PyBo has Australian government approval for use against an exceptionally wide range of insects in almost all situations…..

APVMA Approval: 53738/54292 80g/L Natural Pyrethrins 480g/L piperonyl butoxide


Picket Insecticidal Concentrate

Registered as a grain protectant to prevent attack of a wide range of stored food pests. Apply as grain goes into storage. One day withholding period and it can be used as stockfeed from then on… or kept, insect-free.

DRIFT Industrial and Domestic Insecticide

This product is widely used through thermal foggers, misting or Ultra Low Volume (ULV) equipment. Inside buildings, the droplets are aimed high and allowed to fall. Insects that are resting on roofing, walls, pallets are exposed and when contacted, will become affected and often begin to fly — contacting more droplets.

APVMA approval: 45251/20L/1103


PYRETHROIDS is an all-encompassing name for insecticides based on Pyrethrum/ pyrethrins. Included are synthetic insecticides, meaning those that were developed based on synthesising isomers of various molecules of the natural material using various alcohols and esters.

The available synthetic pyrethroids are “designer” materials for more specific purposes or targets. One of the earliest was Permethrin which is very stable, even used in protecting wool carpets against carpet beetles and clothes moths — and so low in toxicity to mammals that human babies and puppies can play and roll on it without risk. Others have light stability and can be used on crops and as short and medium term residual insecticides for say cockroach, ant and termite control.

PYRETHRUM is the name of the refined, natural extract from the dried flowers of Chrysanthemum cinerae.

PYRETHRINS are the insecticidal active isomers. Pyrethrins 1 and Pyrethrins 2 are the bits of the pyrethrum extract that provide the real result: dead insects.

Pyrethrum – The often overlooked insecticidal option

Big commercial growers are using it; and they do their sums. At about 20 times the concentration of home gardener products, the dilution rate is 1 ml to a litre of water, in other words, 1 litre makes 1000 litres of spray.  Growers of fruit, mangoes, avocadoes and Asian fruits in the north to citrus, olive, stone and pome fruit growers in the south are adding natural pyrethrum into their pesticide management program. So are growers of berries and cherries, tomatoes, salad greens (and reds), crucifers, cucurbits, onions, cut flowers in fact any crop with pests out on the surface. It won’t work on pests that burrow into the plant tissue such as fruit flies. citrus and other gall formers, leaf miners and scale insects hidden under their waxy covering. The withholding period is just 1 day.

The spray solution will even wet cabbages so you won’t need to add a wetting agent. It is compatible with fungicides and foliar fertilizers so you can do two or three jobs at the same time. Because natural pyrethrum is so low in mammalian toxicity, many production facilities with employees like the idea of using the softest chemical possible to reduce the risk of claims — providing it will still do the job. Re-entry is a matter of waiting until the droplets have settled. No protective clothing is specified.


A tomato grower at Bangalow on the NSW North Coast had so much trouble with whitefly he was almost considering turning his ‘igloo’ into a machinery shed. He’d pulled out a couple of rows of tomatoes and the ones still struggling were about half the size (bush and fruit) of those growing outside just 20 metres away. Py-Bo turned the situation around.

A linseed crop on the Darling downs was under stress from lack of rain and consequently the heliothis caterpillars were devouring around 5% of what heads were left overnight. He was able to eliminate the pests within an hour or so and get a harvest instead of ploughing it in. Heliothis, monoleptas and loopers were all attacking a crop of soybeans and had destroyed flowers and pods. Boom-sprayed at 400 litres per hectare, the insects were killed. Luckily, secondary flowering did occur and a yield of around 2 tonne/ha was taken off. Not as good as 3-4 tonne, but very worthwhile under the circumstances.

One of the biggest Avocado growers on the mid north-east of NSW is using PyBo. Trees are treated with orchard blowers using around 4 litres a tree… to control fruit spotting bugs and monoleptas.  Small market gardeners using knapsack sprayers and battery operated hand sprayers use it on broccoli, lettuce, tomatoes, capsicum, melons and pumpkins attacked by anything from aphids, thrips, bugs, caterpillars of various sorts and grasshoppers. Pest populations are controlled in minutes. Those who have a constant cropping regime such as strawberries, blueberries and fancy lettuce take advantage of the 1-day withholding period harvesting the morning after the evening spray.  Spray as often as needed to avoid any insect damage that reduces or eliminates acceptance by the retailer. Cut flower growers and exporters don’t want even dead insects noticed at time of delivery and so they program a spraying or fogging to eliminate “evidence”.

Insect Resistance?


Insects build up a resistance to a regularly used insecticide by a natural selection process; the survivors are the only ones left to mate and most of their progeny have the survival ‘mechanism’. Eventually, the original insecticide doesn’t work at all; the pests keep eating and breeding. To combat this process, another insecticide is usually chosen from a completely different chemical group. Alternating the application using different groups is established good practice. Natural pyrethrum has no resistance problems. There are a couple of theories: the natural pyrethrum molecule is very complex with its 6 component isomers and variations within those isomers, therefore insects have a hard time combatting and surviving all the actions. Laboratory trials to develop resistance in flies and various grain insect pests have only been nominally successful but this is not replicated in real life situations. The other theory is the choice of Piperonyl butoxide as the synergist to go with natural pyrethrum; (when synthetic pyrethoids used in cotton crops had a resistance problem, PBO was added and insects were again controlled).


‘Synergy’ is a word used for all types of increased performance where 2+2 equals more than 4. Pyrethrum extract is very expensive so synergising it with a lower cost material makes good financial sense.

Theoretically, say it takes a level of 10 pyrethrins to kill a pest when used alone, if, by adding even 4 to 6 times as much of the low cost synergist you can then kill the pest with a level of say 3 pyrethrins — that is cost/effective synergism.

By adding a low cost chemical that reduces the insect’s natural ability to breakdown or oxidise high priced pyrethrum, you can kill the pest for much less money.

The synergist we use is piperonyl butoxide which is not an insecticide but a very effective anti-oxidant which greatly reduces the insect’s ability to detoxify not only pyrethrins but other insecticides. It saves money without increasing hazard to us mammals.


The time to take action is before damage is done. To spray as soon as insect pest numbers begin to build is prudent. You can be certain the pests are not going to go away; their numbers will only increase. When the damage is significant, it is too late. Lowered yield is money lost forever. You can do better next year but you can’t get back the losses of the year you’re in now. After the first spray, how long should you wait for the follow up? The short answer is: spray/mist as soon as the pest population has built to the stage before significant damage is about to occur. You don’t spray just because it’s a week or two weeks; you get out the equipment because you have pests to kill.


How do you tell?

After the first spray, around 90+% of pests should be dead. There could be some egg-hatching say next day and, depending on your pest and the climatic conditions, it could be 14-21 days before the nymphs/larvae get to  become adults. A close inspection of insects in a cluster usually reveals immature stages and some adults. The adults will usually be the ones with wings and, wings means sexual maturity which means more eggs (300-400 per female is quite normal). This is just one indicator that it is time to spray/mist.

Smart growers are always checking for pests. Pests can fly in overnight, monoleptas for instance, or thrips, etc., but the pest population may alternatively build over a couple of generations. The stage the crop is at also has a bearing on the decision; if a pest is not affecting the fruiting process (by eating some foliage but not to the stage photosynthesis is significantly reduced) control measures can probably be delayed. When harvest is imminent, the timing can be crucial. PyBo’s 1-day withholding period is a comfort to have up your sleeve.

101 USES

There are 101 uses for natural pyrethrum… and then some!

Pyrethrum is the most effective insecticide on the planet. It is also the most versatile and effective insecticide available — even when you compare it with modern synthetic insecticides. And, its toxicity to mammals is so low as to be almost inconsequential. Mammals cannot develop chronic poisoning but natural pyrethrum can cause allergic reactions in some people. Sneezing is perhaps the first noticeable symptom. If you get allergic reactions to it, stay well out of the action. Don’t use it. Sorry, the great advantages of pyrethrum are not for you.


101 uses?

When you multiply the number of insect pests pyrethrum controls by the number of places and situations you can use it — there are thousands of uses! Pyrethrum is an insecticide and miticide that kills by contact. Whether it hits them as a droplet, is picked up as they walk over a recently treated surface or they eat a sprayed leaf, the pyrethrum attacks their nervous system and they die. Secondly, pyrethrum is repellent to most insects. At levels mammals can’t detect, insects, particularly bees, can ascertain the presence of pyrethrum and they stay well away. Thirdly, pyrethrum has a short residual life when it is exposed to ultra violet light but lasts for months inside stored grain, for example. This is a really important advantage. There is no long term contamination of surfaces or areas. A thorough application gives a quick kill reducing the infesting population to almost nil and it takes time for another population to build up.



(Flies, mosquitoes, midges, moths, ferment flies, beetles, aphids, thrips, whiteflies, leafhoppers etc.)

Pyrethrum diluted in a light oil or emulsified in water and dispensed as a spray, mist, fog or aerosol aimed at the pests. Impacted by a droplet or two… they die. Repellency is an important factor. If you are organising a BBQ or other outdoor function, you can spray/fog all the surrounding foliage and buildings to kill all the mozzies and sandfly/midges. The area becomes repellent to new insects. It could be hours before the first bite!.


(Cockroaches, ants, caterpillars, spiders, mites, etc.)
Liquid formulations of pyrethrum sprayed into cracks and crevices will kill hiding insects. Powder formulations have been used for more than a hundred years to control fleas, lice and ticks on humans, dogs, etc…
(Do not use on cats, which lick their fur).


Pyrethrum in a grain mass will protect against weevils and other grain eating insect pests for 3-6 months. It can protect your precious seeds from insects that just love to eat the embryo first.

The residual life is longer because the pyrethrum is down in and mixed with the grain away from ultra violet light. If you’ve treated to protect stock feed, you can feed it out from next day onwards.


Apart from the examples of the BBQs already given, pyrethrum solutions applied to the coats of horses, cattle, goats and dogs can give them relief from biting insects. Some years ago, dairy farmers increased milk yields considerably by repelling the annoying biting flies. This was done by spraying the herd after the morning milking which allowed the cows to relax and chew their cud and produce milk in greater quantities than if they were stressed by biting flies. Beef cattle feedlots could increase their beef production during those couple of months when biting flies reduce weight gain. An extra kilogram of prime beef a day times 10,000 steers is a lot of money!

Bees are repelled by tiny amounts of pyrethrum. If you spray late in the day when the bees are back in their hive, they will not come anywhere near the treated plants and areas until the UV light has done its job in degrading its effectiveness, say, about mid morning. If you don’t actually spray a bee, you won’t kill it.

Repellency has also been used on packaging. Varnishing the outside of paper and cardboard food packages was once a common practice to repel weevils and flour moth


Flower, fruit, vegetable and ornamental plants are almost always attacked at some stage by aphids, thrips, bugs, hoppers, mites or leaf-eating caterpillars and beetles. If you can contact them by liquid or dust formulation of pyrethrum they will die. Because of the ultra violet sunlight, there is no residue next day and the crop is safe to harvest from then on.

Pyrethrum is not a systemic so it will not enter or be circulated around the sapstream to kill sap-sucking insects such as scales, gall-formers or fruitfly larvae inside the plant tissue. Crop yield increases by much more than the cost of the pyrethrum and its application.