It is the Only natural single release fumigation fogger on the market. Clearly this has major benefits for humans and pets. It only requires that the premises are vacated for 3 hours vs 12 hours with the synthetics. Remember that the Pyrethrum has a two-hour life in sunlight before it starts to biodegrade. Tests have shown it to have more potency than the synthetic foggers available because pyrethrum is so much more effective as an active ingredient because it contains 6 pyrethrins... What's in the box 4x 330ml can of Robosol Insect Bomb full release