If your pet tears, chews, or otherwise ruins your stuff, these tips can help you keep your gear like new. Ms. Wells is a staff writer at Wirecutter, a product recommendation site owned by The New York Times Company. I repeat that phrase when the dog chews up my favorite eyeliner pencil or the cat scratches up the new duvet cover. Though pet owners have probably been saying this since the dawn of dog domestication, the truth is that pet owners can have nice things. We just need to know how to keep our stuff safe while ensuring that our pets still get the enrichment they deserve. As the pets writer for Wirecutter, a New York Times company that reviews and recommends products, I’ve learned a lot about pet supplies and animal behavior. There’s a ton of gear out there that keeps our pets from scratching, marking, or chewing on the wrong things. Yet deterrents alone won’t keep your belongings in like-new condition. You also need to guide your pet’s instinctual behaviors toward constructive outlets, like pet-friendly toys, and reinforce their good manners so they don’t revert to their troublesome ways. Here’s how. If I forget to close the bathroom door before I leave for work, I’ll co...