Coopex is a water dispersible powder, which is mixed with water to prepare a residual insecticide for controlling a wide range of household insect pests, both indoors and outdoors. It can be used in commercial buildings such as bakeries, hotels and restaurants, as well as around farm buildings, poultry houses and stables.  
The 25 gram sachet makes 5 litres of spray and is handy for small jobs.  The 1 kg pack is for larger application and is especially suited to treating pasture seed against seed harvesting ants.  One 1kg pack is enough to treat 200 kg of seed.  This protects the seed by repelling ants which would normally take the seed and store it as a protein source.