Pyrethrum will kill any insect, mite and spider that you spray it on... provided the concentration is high enough. But it doesn't last. Sunlight breaks it down in hours.

You can't kill 'em any deader than dead. So why use more than you need? One of the good things about pyrethrins is that it doesn't have any residual life. You can only kill the pests that are out and about at the time of the application. Those that come along later may be repelled by the most imperceptible pyrethrins levels... or you'll have to do it all again.

At very low levels, pyrethrum will repel insects. Somehow, they must naturally know it will kill... so they back off! This is particularly important to bees. They stay well away and don't get killed. In fact there are 101 uses for natural pyrethrum and then some!

Sorting out pyrethrum from pyrethrins
Pyrethrum is the flower and the name given to the extracted and refined material. Pyrethrins is the component of the extract that has insect killing/repelling properties. Pyrethrum is made up of 6 components: Cinerins I, Cinerins II, Pyrethrins I, Pyrethrins II, Jasmolin I and Jasmolin II. Because the pyrethrins are the only bits worth paying for, they are the bits measured and recognised on the label.

The Products:

Py-Bo Natural Pyrethrum Insecticidal Concentrate
This is a solvent-free ultra concentrate to be diluted with water at 1 ml per litre. 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 much more economical to use in the instant control of a wide range of crop pests.

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.

It is an Approved input for Organic and Biodynamic producers but conventional growers are also choosing PyBo because it does not have any resistance problems and it is of such low hazard to the humans that have to apply it.

The withholding period is just 1 day.

Visit the Download section of this website for a lot of valuable and helpful information including reports on specific crop treatments.

Ready to use, this is a much higher concentrate than normal for misting or thermal fogging of flying insects such as mozzies and midges outdoors and grain moths and beetles/weevils in warehouses. The carrier is a light odourless oil that can be applied through a ULV mister or a thermal fogger. Drifts higher concentration means greater control with less liquid... less oily residues on walkways, machinery and equipment.

This is a ready-to-use more normal concentration of natural pyrethrins and piperonyl butoxide. It is based on a light odourless oil. It can be sprayed, fogged or misted to control cockroaches, flies, moths, beetles, spiders, mites etc. If you hit 'em... you kill 'em.

But there's no point wasting it by applying more than you need to kill those that are out and about at the time. There's no residual life.

A grain protectant to act as a picket line to keep insects out of the pile! All the beetles, weevils and grain moths that love to attack stored produce are killed and/or repelled by the application of pyrethrins at 3ppm. The 2 litre bottle makes up 66 litres of solution which is applied to the moving grain at 1 litre per tonne to give 3-6 months protection.

How does this happen if pyrethrins has no residue?

Pyrethrins is degraded by ultra violet light. There's precious little light deep inside a silo or a heap of grain, so pyrethrins doesn't break down as usual. The big bonus is that the repellency keeps the female insects away. They aren't going to put their babies anywhere near that pyrethrum stuff!