Thank you again, everyone, for your responses.
I know in an ideal situation, I go out, buy a beautiful thriving specimen, and then at that point all I have to worry about Is what happens on my end. The reality is (since I am new and buying from big box stores), I buy an orchid, bring it home, un-pot and see a mess of dried or rotting roots, possibly some pests, and the occasional leaf spot/spots that I don't know whether to remove, treat, or ignore. I don't necessarily mind any of that, and I don't mind the idea that I may be having to deal with a situation where I have a plant that may not give me results for years to come or one that may even die. BUT I would like to know I took all the necessary steps to aid it in its survival.
On the other hand, I also don't want to overdo anything to the point of unintentionally murdering my plants, something I could absolutely see me doing. (I'm getting a mental image of me standing over a batch of Orchids, dousing them with chemicals while shouting, "Just take your medicine!!! )
I appreciate all of you taking the time to address my concerns.
Oh, and one other question. When you are spraying with any kind of treatment solution, do you do your best to avoid getting any liquid into the crown area, or do you just spray until fully covered?