Most common substances which are combustible such as wood dust can become explosive but mineral dusts, being non combustible, cannot.
Chlorophos (PBI) containing diazinon & chlorophos Soil Pest Killer (Miracle) containing pirimiphos-methyl Both are dusts used at sowing or transplanting.
Natural production of dusts include ash from volcanic eruptions or forest fires, sea salt particles or Saharan dust.
Permethrin is available in dusts, emulsifiable concentrates, smokes, ULV (ultra-low volume), and wettable powder formulations.
The reviews for Fresh Step cat litter seem to be mostly positive, although some people are concerned about the dusts and chemicals from some of the ingredients.