Works but takes 6-12+ months
Sprayed on a few headstones in late March, not a major improvement 3 months later. Somewhat dissapointed.<br /><br />Update: Checked on the same headstones 10 months after application and notice the difference. Not perfect but not bad for the price. Just need to be patient. Upgraded to 4 star review since the product does work eventually, not 5 stars due to the long wait.<br /><br />Update2 - 2 years after first application and a second application this spring, headstones look almost new. A major improvement after 30-50 years of neglect. As long as you understand it's probably going to be a min of 1 year to see major results, and require annual applications for a few years, you will be very happy with the results.
Rating: 4 stars