I read about api-life, guard, hopguard and a few others and then I see OA fumigation. Why do you think there hasn't been a dominate choice? I would think if they all work about the same, wouldn't the cheaper prevail? Or is there a dominant choice? I guess Im no different than many others, thinking they wouldn't have to worry about mites there first year, but here I am, and I am leaning towards AO, just because it seems cheaper. Any thoughts?