The average golf course has nearly 75 acres of land. That’s a lot of space for errant balls to disappear, and even if you put a RFID tracker on your autographed favorite, it can still get stuck in the mud under six feet of water. Fortunately, unlike lost socks, lost golf balls don’t always appear to vaporize into a parallel universe. Enterprising companies have done the work to collect, clean, and resurface these wayward orbs so they can be reused close-enough to par for most players to enjoy. Whether you vow to use primarily recycled balls from now on or reserve them for practicing technique, a simple swap can make the sport more eco-friendly. Here’s how to assess which sets will be a win for your game.