This is one of those "why didn't I buy this 10 years ago?!!" products that more than delivers. We live in central Texas and have a small, 2.5 acre organic chicken, turkey and duck farm - 100% organic. We also have a horse stable next door to the south, meaning most of the year we also must contend with the stable flies that swarm there.After only using diatomaceous earth (DE) to control mites, the mites and flies almost pushed us past the breaking point. I decided to give this fogger a try using Pyrethrin (organic pesticide dervied from the Crysanthumum flower). Let me tell you - this fogger is a rock star!Mixing the solution was a snap (1 oz per gallon of water) and the 35 pounds total weight on my back felt solid but not uncomfortable - the harness is robust, well-padded and easily adjustable. The on/off switch starts a blower motor which creates a venturi draw of the solution, atomizes it and sends it to the nozzle which has its own internal spinner fan to further atomize and blow the fog out. The atomization (fog) is amazingly fine and uniform and the force will send the fog stream to the top of the gable end of our single story roof. It is easy to control and took 30 seconds or so to feel like a pro. It will place a very fine mist on solid surfaces and the fog will find its way into cracks and crevices.After one application our coop is fly and mite free! The mosquitos that swarmed us on the back deck are gone! and the one hornet's nest that was under construction on one of oue eaves is abandoned after one pass.My recommendation is to purchase the 3M full face respirator to wear while fogging (I have one and it just adds to your feeling of confidence as well as provides protection from inhalation.Best purchase I've made for the farm!