There's tons of informational blogs, and a dog can help, but you really need a professional. This requires persistence, and unfortunately one armadillo can seriously out-persistent your best individual efforts.
There are two ways of getting rid the armadillos in your backyard.The first thing is making some armadillo trapping.Armadillo trapper can be hired in doing this kind of job.Using bait will be non sense because armadillo doesn't fall for this kind of trap.Another way is,by relocation or via prevention techniques.
You can set a have a heart trap and when you get it call pest control and they will come pick it up or you can just call pect control and they will come out and capture it and take it out into a place where it cannot bother the human counter parts.
The some of the ways to get rid of armadillos are:-
1)Armadillos hates the smell of ammonia ,moth balls etc so by using deterrents we can avoid armadillos. 2)By building a fence around the land but make sure that the fence should be burried into land for atleast 18 inches. 3)There are professionals who traps these animals.