Wick's idea is recommended if it's safe and you can get away with it. But if you want to try and trap, I found 2 sites.
Solving The Armadillo Problem I and Solving The Armadillo Problem II. It seems as though the thing to do is 1) learn their habits, then 2) attempt to solve your problem. A little education is worth at least 1 armadillo. ;-)
My best to ya and hope this helps.
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