"On the other side of my backyard fence are thousands of acres of open range... California Foothills, Farm Land, Avocado Orchards - in two words, Gopher Heaven (oh, and the view too).
I purchased the Windmill, got a 10 foot 1/2 inch galvy water pipe, put it two feet in the ground, I also used lock nut washers on the 3 nuts and 2 screws, covered the many many gopher holes, and no more gophers - Like Magic!
The day before the gophers were using my yard as party central, and from the day I put the Windmill in the ground there are no new holes, and nothing for my cat to do except for her usual six to eight hour power nap.
It is a well made product, and with the addition of the lock nut washers, it is one that will last a long time. At 8 feet above the ground it is high enough above everyones head, plus for me, I have ocean wind (oh, and that view too) from the front of the house, so I placed the Windmill where it gets wind from every direction."
What is your level of technical expertise? Home Handyman