Thanks all for your input.
meg, I tried the babyoil last year - not effective, just made the dust stick to their legs
FH, not to worry, I do regular/required deworming, but I still try to eliminate as many of those eggs from their legs as possible. And thanks for the warning about the nail polish remover - I had my doubts & that's why I asked - definitely will NOT be using that shortcut
And sprag, I have one of those Slick'n'Easy blocks - never thought of using it for bots - Thanks (much less chance of nicking the skin with that block