I killed over 300 when I finally quit counting, that was over a 25 year span. I had a spot in my pasture mulched with the carcasses of dillos. I can tell you A LOT! about armadillos & their behavior.
They are very near-sighted. You can use boards, obstructions and buildings to funnel them to a strong trap.
Smarter ones will hide and wait motionless until the threat is past if they aren't near an escape burrow. So when stalking one that has run into the cover of brush, stand still and quietly wait, they will move in a few minutes.
They will use a burrow made by another dillo. They can smell a previous dug burrow two years after it had been dug. You can fill it with rocks, debris, flood it with water & mud and they will still dig it up. If you want to stop a dillo from using a burrow, stuff a dead dillo in it and they will abandon it and never return.
Never leave a dead dillo that you've shot in the wee hours of the morning in your yard unless want that area of your yard destroyed. Other dillos will come and hold a 'wake' and try to roust the dead by digging a moat around it.
While dillos can contract & transmit leprosy, the instance is statistically insignificant. They apparently make good chili and are closer to pork than anything else and were referred to as Hoover Hogs during the depression. I've called then Panzer Possums.
They give birth to 4 young all of the same sex.
They can walk under water and climb chainlink fences.
They are the favorite fare of vultures. That's my preferred use of them, belly up in the paster and the buzzards will clean them up in 2-3 days then I mulch them up with the mower. Buzzards gotta eat same as the worms.
They make really cool purses from them in Mexico.
Best defense is a good dog. In lieu of that, motion lights & 00 buckshot. Yes, a suppressed .22 works as well but they bounce around like blood spraying basketballs. Buckshot is an instant stop as are larger calibers.