To avoid getting the lines don’t walk back and forth with with the surface cleaner. The over lapping of the tips causes cleaner “runs” which become more apparent over time.
While standing still push the surface cleaner forward, move left or right 6 inches the pull it back. Move over 6 inches again push forward. Do it all the way across then move up to a new section and repeat. You can move the cleaner faster forward and back than you could if you walked up and back. The tips over lap each other constantly making it easier for really dirty surfaces. It’s not as slow as it sounds. I got it from a guy on here years ago and it works great. Great results withZero lines.
