Sherwood Chemicals
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General Instructions (Termiticide Applications):

IMIFORCE Utility Insecticide should be considered as part of a program involving the following steps:

  1. Locate nest and treat where possible.

  2. Repair or recommended repairs to leaks and drainage as a condition of warranty.

  3. Improve or recommended improvements to ventilation underneath structures.

  4. Ensure or recommended subfloor areas be kept free of stored or waste timber.

  5. Application of soil barrier treatment.

  6. Advice to property owner or manager, that disturbing the treated soil barrier (e.g., with subsequent additions, alterations, or landscaping etc) may render the treatment ineffective unless re-applied or other actions undertaken.

  7. Continuing efforts to locate and treat the colony in the nest if not eradicated before application of soil barrier.

  8. Post-treatment inspection to confirm success.

  9. Ongoing inspections, at least annually, as recommended by AS 3660 Series.

The purpose of chemical soil treatment for termite control is to establish a continuous chemical barrier (horizontal and/or vertical as required) between the structure and termite colonies in the soil. The barrier impedes and discourages concealed termite entry for the service period of the barrier. Care needs to be taken to understand the construction of the building and to apply the spray solution in a manner ensuring a complete chemical barrier. If a barrier is not complete or breached, then concealed termite entry may occur. It is sometimes not possible to form a complete barrier around an existing structure, in which case other termite management options and/or more frequent inspections will also need to be undertaken.

Alteration to Building to Increase Effectiveness of Treatment:

Alterations include improvements to drainage and sub-floor ventilation, the removal of soil timber contact (e.g., railway sleeper retaining walls), and the provision of access to areas for regular inspection. Poor drainage, including rainwater flowing around structure perimeter, may compromise IMIFORCE Utility Insecticide the chemical barrier. Drainage, ventilation, and timber/soil contact problems need to be addressed before treatment.


To ensure good mixing:

  • Thoroughly clean the spray equipment to remove residues of other formulations from the equipment before using IMIFORCE Utility Insecticide for the first time.

  • Prior to pouring, shake container vigorously. Then premix the required quantity of IMIFORCE Utility Insecticide with water in a clean bucket before adding it to the half-filled spray tank then top up to full volume. Allow the contents of the tank to be recirculated. Note that at the recommended dilution rate IMIFORCE Utility Insecticide will usually dissolve to a clear solution with only a faint odor.

Soil Preparation:

In soils where wetting is difficult, it will be necessary to loosen the soil prior to treatment. It may be necessary to add a wetting agent to the spray solution to avoid runoff before it can soak into the soil.

Treatment of Existing Buildings:

Authorized persons applying IMIFORCE Utility Insecticide should be familiar with Australian Standard AS 3660 Series, especially the section which specifies the procedures to provide a chemical soil barrier, and/or the appendix which shows the areas where barrier treatments should be applied to ensure no gaps in treatment.

Treatment of New Buildings:

IMIFORCE Utility Insecticide cannot be used for the application of horizontal barriers prior to pouring a slab unless used in a reticulation system certified for that purpose.

Reticulation Systems:

The reticulation systems used must be capable of establishing and maintaining complete and continuous treated zones around building perimeters, service penetrations, and other possible termite entry points between the structure and the termite colonies in the soil (in accordance with the Australian Standard AS 3660 series).

Thickness of Barrier:

It is recommended that the minimum thickness of any treated soil barrier is 100 mm.

Horizontal Barriers:

At the perimeter, loosen soil to a depth of at least 80 mm and 150 mm wide and apply at least 1.5 L of spray solution per lineal meter.

Treatment Beneath Concrete Slabs and Paths:

Horizontal barriers can also be applied by drilling through existing slabs. As uneven distribution is possible under the slab, increase the application rate to at least 10 liters of spray solution during application to ensure even distribution. If soil subsidence has occurred beneath the concrete, the use of a foam carrier may assist in treating critical areas.

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