An "absolute" must?
I would bet the number of shows that go down without a test, to the number of shows that both parties "must" get tested, is about 100-1 (if not greater)?
And for rolls too, the disparity must be astronomical
Let me ask you, where do you live exactly? I could see this being valuable in a cold climate, where ticks don't exist, but I can't see this as realistic at all for a large yard in the south.
Jack