Monier LogoArachNil


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Before / After Exterior Cleaning

ArachNil® is a cost effective way to eradicate spiders from our homes safely. It is made from organically grown pyrethrums, from the West Coast of New Zealand and the Hawkes Bay, and the active ingredient will remain effective over multiple applications, as it does not cause resistance to build up in arachnids and insects.

In addition the active ingredient will not affect pets or people and our trained Applicators will look out for beehives and fish ponds.

The spiders and ants will be affected immediately by the treatment and the repellent effect will last for several months, and up to a year in dark cracks which are not exposed to direct sunlight.

The key areas that we spray are exterior window frames, weep holes in brick works, soffits and eaves.

Is it Safe?

Yes. The active ingredient will not affect pets or people and our Applicators will look out for beehives and fish ponds. Once the treatment has dried, which takes a few minutes, it stays put.

How long will the treatment last?

Spiders and ants will be affected immediately and you will probably see them scurrying away a few minutes after the application.

The active ingredient is light sensitive and will break down in sunlight to inert materials, but the areas that spiders live in are dark, and the repellant effect can last a whole year in these areas.

More importantly the active ingredient does not cause resistance to build up in spiders and ants, unlike some synthetic chemicals, where the persistent low levels of chemical have allowed these pests to become resistant over time. This is a very real problem, as it means that higher doses need to be applied more frequently to obtain the same result.