Again, thank you for the response. There is a lot of competing info out there... what doesn't help when folks, and I know people get weary of answering stuff, but when folk supply 1/2 answers that are cryptic and tired. Really doesn't further the cause for those who are seeking.
So I appreciate your taking the time to place and answer out... I was on the cusp of going for a stronger, more expensive zapper, but if what I am seeing is true, a simple zapper used consistently and correctly can have reasonable response too.