Control pests that move in and out of an area. If baits are not removed when the pesticide becomes ineffective, they may serve as a food supply for the target pest or other pests. The coarse particles are made from an absorptive material such as clay, corn cobs, or walnut shells. The active ingredient either coats the outside of the granules or is absorbed into them. Granular formulations also are used to control larval mosquitoes and other aquatic pests.
Wettable powders are dry, finely ground formulations that look like dusts.
They usually must be mixed with water for application as a spray. Wettable powder particles do not dissolve in water. They settle out quickly unless constant agitation is used to keep them suspended. Easy to store, transport, and handle, Less likely than EC's and other petroleum-based pesticides to cause unwanted harm to treated plants, animals, and surfaces, Easily measured and mixed, Less skin and eye absorption than EC's and other liquid formulations. Soluble powder formulations look like wettable powders.