(Image credit: Shutterstock) It’s no secret that dogs can wreak havoc on a lawn and turn what could potentially be a perfect patch into an expanse of grass dotted with urine spots and unsightly holes. And while dogs will do what dogs do, it would be unfair to keep them off your lawn and curtail their chance to exercise and expend energy. To help you repair your lawn after dog damage and to find preventative measures to lessen the destruction, I’ve called on lawn care pros to reveal their secrets. And it appears that even if you are a dog owner, you can have a lawn to be proud of. Dog urine is the worst offender (Image credit: Shutterstock) The first thing your dog is likely to do when it runs out onto your lawn is to have a wee. And as they are creatures of habit, that are likely to have a favorite spot. So, if you're lucky, they won’t decimate your whole expanse of grass. But wherever they urinate, they leave a mark, and it's what's in the urine that damages the lawn.…