Py-Bo Natural Pyrethrum Concentrate - 250ml

Regular price $67.25 Sale

Py-Bo Natural Pyrethrum concentrate Contains Natural Pyrethrin sourced from Tasmania together with PBO synergist. At 80 g/L pyrethrins and 480 g/L piperonyl butoxide (a 1:6 ratio), it is...


Pest and Lawn Warehouse

Pest and Lawn Warehouse

Py-Bo Natural Pyrethrum concentrate

Contains Natural Pyrethrin sourced from Tasmania together with PBO synergist.

At 80 g/L pyrethrins and 480 g/L piperonyl butoxide (a 1:6 ratio), it is 20 times stronger than the 4 g/L products available in garden shops — and therefore much more economical to use.

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.

250ml - Makes up to 250 Litres

Py-Bo Natural Pyrethrum concentrate is registered for use on all fruit and vegetable crops, cut flowers and ornamental plants. It can also be used outdoors to control adult mosquitoes, midges, flies and other flying insects.

Py-Bo Natural Pyrethrum is also registered for use inside buildings including domestic premises, commercial, industrial and public buildings including: food processing establishments, shops, factories, hotels and motels, shipping containers, offices, schools, storerooms, warehouses, hospitals, barracks, private houses and external areas asscociated with such establishments. Agricultural buildings including storage sheds, milking sheds,other high density animal production sheds, barns, kennels and stables.

Py-Bo Natural Pyrethrum concentrate controls all aphids, all thrips, all caterpillars, all whiteflies, all leafhoppers ants and earwigs.

Features & benefits of Py-Bo natural pyrethrum:

  • A solvent-free concentrate to avoid leaf burn
  • Only a 1-day withholding period; spray today, eat tomorrow
  • Compatible with fungicides and foliar fertilizers.
  • Mammals cannot develop chronic poisoning
  • Worker re-entry to crops as soon as droplets have settled.
  • Kills on contact - the pest dies within minutes
  • 1 day withholding period 
  • There is no insect resistance
  • Mammals cannot develop chronic poisoning

A long residue is of no advantage on plants anyway; new leaves appear every other day and few insects eat old leaves when new and tender shoots are available.

Some growers of crops in protected facilities such as greenhouses, use pyrethrum to kill off the last of the pests before their old crop is removed. This significantly reduces the threat to the next crop, and, if they intend to introduce beneficial insects, there are no residues to affect their establishment.

In a nutshell, if you have the equipment that can put a droplet or three on any insect in your crop — it will die within minutes. Natural pyrethrum will kill almost every insect it contacts. It kills within minutes so you can be sure it is doing the job you expect. It degrades in UV light so the withholding period is just 1 day. Because it is rapidly metabolised it can be used on all crops and inside food handling areas.

Natural pyrethrum will rapidly degraded in mammals and birds and cannot build up to levels which lead to chronic poisoning symptoms. It is possible some people will have allergies and touching nasal passages and other sensitive skin with unwashed hands can lead to discomfort.

There is no petroleum solvent in the formulation to cause leaf burn, however the only plants we know to be affected are continental or Lebanese cucumbers.

Py-Bo natural pyrethrum can be tank mixed with foliar fertilisers and fungicides. Wetters and stickers are not required; they just add to your expense for no benefit.

Application Techniques
For your first application. find a section of your crop or premises where there are active pests then, using your normal equipment and technique, apply the Py-Bo pyrethrum solution. Important: check the result within 15 minutes. If you find dead pests it is because they were contacted. If there are live pests it is because they were not contacted so you need to change something physically; the droplet size (larger or smaller) or the angle of nozzles, or the volume of solution for the area. Try another section to assess the result of the changes you’ve made.

Py-Bo Natural Pyrethrum can be used through misting and fogging machines to kill everything that flies in factories including of course, flies, fungus gnats, drosophila, wasps, etc.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in Australia. Note that there are restrictions on some products.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full kg