I own two rescued labs and installed "Invisible Fence" this summer to keep them on my property. They have 3 out of our 10 acres enclosed and it gives them plenty of roaming room. It wasn't all that expensive compared to the numberous trips I had to make heach day to bring them back and it was a lot cheaper than traditional fencing. I highly recommend it and the only draw back is that it doesn't keep other dogs out. Luckily we're isolated and that hasn't become a problem. Good luck to you with your upcoming adoption.