I am an in the pest control industry and bought this to try it out. I no longer carry my 1 gal B&G. This is so easy to use without mixing more product than you need. If you do a racial and proportion you can use a measuring syringe to add the correct chemical to the 16oz bottle. It also gives you quick spray adjustments. Also seems pretty durable after using it for over a year and banging around my truck.
This thing work like a charm makes easy work for spot treatments on interior of customers houses. I like the fact the when on a pin stream it has pretty good distance. My only complaint is there is a little nut between the pump and handle gets lose ever once in a while. When it's to lose and you press the handle to spray it go straight to lock spray. Don't let that detour you this thing is awesome.