About a year ago, we had a really bad gopher problem in our backyard. I've successfully trapped and eliminated all the gophers but my dog sometimes can still smell something and goes crazy digging. I wouldn't mind the digging, but we just laid sod earlier this year. The lawn in the backyard covers roughly 3,500 square feet.
I'm curious if there's anything I can do (besides being 100% vigilant while my dog is out back) to the lawn itself that could eliminate the gopher odor, or make it harder for him to scent. Obviously, I don't want the grass to be negatively impacted.