So it's more likely to make suitable to berths insect free. Act quickly, it does not. A flea has survived at least 3 hours in the compact after 6 hours he had a terrible putt. Dog and cat, it does no harm. At least not on the fur, not dry skin (at least not in the long term) or eruptions or the like. Inhalation should be avoided, of course, best dusting out in light winds.
Oh yes, 3 kg a proper quantity of powder I recommend for individual pets rather smaller packs, on the other hand, the powder is naturally stored indefinitely. So for a dog are 3 kg a lifelong reservoir.