We have a dog that tends to be a digger and tries to get out of the fenced yard. I got this to try along the edge of the fence so that it would not be any fun for him to be there trying to dig. I'm not sure I would trust an electric fence alone but for this is works perfectly.My friend installed it for us because frankly this was over my skill level. I'd consider hiring someone because it's not as simple as it seems. Running the wire is, but hooking it all up to a power source is a little more and there are tools needed so if you do not feel comfortable with that, hire someone.We did not really have to use the flags or training since we just wanted something to deter the dog from going near the fence. We did not have to turn it up very high because it's not like the dog would just be able to dig in a hurry so as soon as he felt the collar go off he backed off and learned real fast to stay away from the fence.This is a perfect solution to a dog who tries to escape under the fence, and much more effective than trying to put up a barrier