Dusts cannot be mixed with water. Soluble powders and wettable powders are purchased as concentrates. They are to be diluted before use by mixing with water. Do not use them as dusts as this may damage plants. Emulsifiable concentrates are liquid formulations which are to be diluted with water to obtain the desired concentration for treating plants.
Granules are dry, granulated materials that come ready to use.
Spread them on the surface or work into the top 2 to 3 inches of soil. Baits contain a desired food of the pest in addition to a toxic substance. When the pest eats the bait, the pest ingests enough toxicant to kill it. Baits are applied to areas that pests frequent.